Rule. After tan and the roots that follow it, luk (deletion) of sic happens optionally when ta or thās follows. "luk" is carried forward from SK 1276, "of sic" from SK 2223, and "optionally" from SK 2376.
Example.
tan + luṅ → aṭ and cli → sic → a-tan-s-ta (ātmanepada, ta)
→ this rule: luk of sic → a-tan-ta
→ SK 2428: the nasal n of the root drops → a-ta-ta → atata "he extended".
Without luk: iṭ comes before sic → a-tan-i-s-ta → ataniṣṭa. (The s becomes ṣ after i, and the t after it becomes ṭ. These are sound changes taught elsewhere. They recur in asaniṣṭa, akṣaṇiṣṭa and ataniṣṭhāḥ.)
In the same way, before thās: atathāḥ / ataniṣṭhāḥ "you extended".
Applies when / blocked by. Only the singular ta counts. ta is named together with thās, and that association (sāhacarya) restricts it to the singular. So the ta that replaces tha in the parasmaipada plural does not count. In yūyam ataniṣṭa "you (plural) extended" there is no luk. Bhaṭṭoji himself gives this counter-example; his commentators explain that this ta replaces tha.
The roots of the class. Bhaṭṭoji opens the class with the words "now seven roots are svaritet". They take both sets of endings. In every one the affix u replaces śap, by SK 2466.
tanu "to extend". tanoti (present). tanvaḥ / tanuvaḥ "we two extend": the u may drop before v (SK 2333). tanute (ātmanepada). Perfect tatāna, tene. Imperative tanu "extend!": hi drops after the u (SK 2334). Parasmaipada aorist atanīt / atānīt.
ṣaṇu "to give". Its initial is ṣ as taught, and it appears as san. sanoti, sanute. In the benedictive, ā comes optionally before y (SK 2319): sāyāt / sanyāt.
In the ātmanepada aorist, sic drops by this rule. The affix ta now begins with t, a jhal (a consonant other than a nasal or semivowel). So ā replaces the n by SK 2504: asāta. Without luk, iṭ comes, and the affix after the root begins with the vowel i. Bhaṭṭoji's commentators note that no jhal then follows, so SK 2504 cannot apply and there is no ā: asaniṣṭa. Before thās: asāthāḥ / asaniṣṭhāḥ.
kṣaṇu "to injure". kṣaṇoti, kṣaṇute. In the aorist there is no vṛddhi, by SK 2299, which names kṣaṇ: akṣaṇīt. Ātmanepada aorist akṣata / akṣaṇiṣṭa, akṣathāḥ / akṣaṇiṣṭhāḥ.
kṣiṇu, also "to injure". Its penultimate i is light. Should it take guṇa before the affix u, by SK 2189? Ātreya and others say no. They rely on a paribhāṣā, a rule about reading rules: "an operation enjoined by a technical name is not obligatory". SK 2189 enjoins guṇa by that name, without naming the vowel. So, on their view, this guṇa need not come. Others say it does come. Scholars discuss this. Forms: kṣiṇoti / kṣeṇoti; periphrastic future kṣeṇitāsi, kṣeṇitāse; aorist akṣeṇīt; ātmanepada aorist akṣita / akṣeṇiṣṭa.
ṛṇu "to go". Bhaṭṭoji's commentators say guṇa and its absence go as with kṣiṇu: ṛṇoti / arṇoti. Dual arṇutaḥ. In the plural the u becomes v before the vowel (yaṇ): arṇvanti. Perfect ānarṇa, ānṛṇe. Periphrastic future arṇitāsi. Aorist ārṇīt. Ātmanepada aorist ārta / ārṇiṣṭa, ārthāḥ / ārṇiṣṭhāḥ.
tṛṇu "to eat": tṛṇoti / tarṇoti, tṛṇute / tarṇute. ghṛṇu "to shine": perfect jagharṇa, jaghṛṇe.
Then two roots are anudāttet, so they take ātmanepada. vanu "to ask": vanute, perfect vavane. In Candra's view it takes parasmaipada: vanoti, vavāna. manu "to understand": manute, perfect mene.
The root kṛ. Last comes ḍukṛñ "to do". It is named on its own in SK 2466, so it too takes u.
kṛ + u + ti
→ the ṛ takes guṇa because of the affix u, with r after it → kar-u-ti
→ the u takes guṇa because of tip, the ending ti of "he" → kar-o-ti → karoti "he does".
Bhaṭṭoji's commentators give these two steps.
kar-u + tas → tas is the ending of "the two". It is ṅit, so the u takes no guṇa
→ SK 2467: the a of kar becomes u → kur-u-tas → kurutaḥ "the two do".
kuru + anti (anti, the ending of "they") → yaṇ: the u becomes v before the vowel → kurv-anti.
A rule called hali ca would now lengthen the u of kur. SK 1629, na bhakurchurām, blocks it → kurvanti "they do".
Watch out. The ta of SK 2547 must be the singular ātmanepada ta. The parasmaipada ta that replaces tha does not count, so yūyam ataniṣṭa keeps its sic.
Now seven [roots] are svaritet. (1463) tanu — in extending (vistāre). tanādikṛñbhya uḥ (SK 2466) [u comes, in place of śap]. tanoti [laṭ, prathama-puruṣa singular]. tanvaḥ, tanuvaḥ [uttama-puruṣa dual, with and without deletion of the u]. tanute [ātmanepada]. tatāna, tene [liṭ]. tanu [loṭ, madhyama-puruṣa singular]. atanīt, atānīt [luṅ]. luk of sic occurs optionally after tan and the rest when ta or thās follows. Because of its association (sāhacarya) with thās, the ta that is singular is taken. Hence not here: yūyam ataniṣṭa ['you (plural) extended' — luṅ, parasmaipada, madhyama-puruṣa plural, whose ta replaces tha]. The nasal (anunāsika) is deleted by anudāttopadeśa… (SK 2428) in taṅ [— before ta and thās, once sic has gone by luk]. atata, ataniṣṭa [luṅ, ātmanepada, prathama-puruṣa singular, with and without luk of sic]. atathāḥ, ataniṣṭhāḥ [madhyama-puruṣa singular]. (1464) ṣaṇu — in giving (dāne). sanoti. sanute. ye vibhāṣā (SK 2319) [ā optionally before a y-initial affix]: sāyāt, sanyāt [āśīrliṅ]. By janasana… (SK 2504), ā: asāta [luṅ, ātmanepada, prathama-puruṣa singular, with luk of sic], asaniṣṭa [without luk: with iṭ, and no ā, since no jhal follows]. asāthāḥ, asaniṣṭhāḥ [madhyama-puruṣa singular]. (1465) kṣaṇu — in injuring (hiṃsāyām). kṣaṇoti. kṣaṇute. By hmyanta… (SK 2299) there is no vṛddhi: akṣaṇīt [luṅ]. akṣata, akṣaṇiṣṭa [luṅ, ātmanepada, prathama-puruṣa singular]. akṣathāḥ, akṣaṇiṣṭhāḥ [madhyama-puruṣa singular]. (1466) kṣiṇu — also [in injuring]. The guṇa of the light penultimate conditioned by the affix u does not occur, by (paribhāṣā) 'an operation enjoined by means of a technical name (saṃjñā) is not obligatory' (saṃjñāpūrvako vidhir anityaḥ) — so Ātreya and others. Others [hold] that it does occur. kṣiṇoti, kṣeṇoti. kṣeṇitāsi, kṣeṇitāse [luṭ, madhyama-puruṣa singular]. akṣeṇīt [luṅ]. akṣita, akṣeṇiṣṭa [luṅ, ātmanepada]. (1467) ṛṇu — in going (gatau). ṛṇoti, arṇoti. arṇutaḥ [dual]. arṇvanti [plural]. ānarṇa, ānṛṇe [liṭ]. arṇitāsi [luṭ, madhyama-puruṣa singular]. ārṇīt [luṅ]. ārta, ārṇiṣṭa [luṅ, ātmanepada, prathama-puruṣa singular]. ārthāḥ, ārṇiṣṭhāḥ [madhyama-puruṣa singular]. (1468) tṛṇu — in eating (adane). tṛṇoti, tarṇoti. tṛṇute[, tarṇute]. (1469) ghṛṇu — in shining (dīptau). jagharṇa, jaghṛṇe [liṭ]. Now two [roots] are anudāttet. (1470) vanu — in asking (yācane). vanute. vavane [liṭ]. In Candra's view (cāndramate) it is parasmaipadin: vanoti, vavāna. (1471) manu — in understanding (avabodhane). manute. mene [liṭ]. (1472) ḍukṛñ — in doing (karaṇe). karoti [guṇa of ṛ, with r, on account of the affix u; guṇa of the u on account of tip]. By ata ut sārvadhātuke (SK 2467): kurutaḥ [dual: tas being ṅit, the u takes no guṇa]. yaṇ [for the u of kuru + anti]. By na bhakurchurām (SK 1629) there is no lengthening [of the u of kurv-, which hali ca would otherwise cause]: kurvanti.
- commentary BM, opening of sk.2547.b1 ('atha tanādayaḥ'): now the roots with the vikaraṇa u are set out; tanu is u-marked (udit), the purpose being udito vā [SK 3328]; tanādikṛñbhya uḥ [SK 2466] means that before a sārvadhātuka in the agent sense the affix u comes after tan and the rest and after kṛñ, in the root's own sense, as an exception (apavāda) to śap. Followed: '[u comes, in place of śap]'.
- commentary BM (opening of sk.2547.b1) on tanoti: guṇa of the affix u depends on tip; before tas etc. there is none, these being ṅit (tanutaḥ); tanvanti — yaṇ once ant has replaced jhi. tanvaḥ, tanuvaḥ — optional deletion by lopaś cāsyānyatarasyāṃ mvoḥ [SK 2333] (our OCR 'akāralopa', Wikisource 'ukāralopa'); tanu — luk of hi by utaś ca pratyayāt [SK 2334]; atanīt, atānīt — vṛddhi optional by ato halādeḥ [SK 2284]. It also runs through the full paradigms (tanoṣi … tanmahe, tatāna … tenimahe, tanitā, taniṣyati, loṭ, laṅ, liṅ, luṅ). Followed: the brackets on tanoti, tanvaḥ / tanuvaḥ, tanu and atanīt / atānīt; the rules are now credited to BM in the translator's note.
- commentary BM: 'sicā' [i.e. 'sicaḥ'] is carried forward (anuvartate) from gātisthā…, 'luk' from ṇyakṣatriyārṣa…, and 'vibhāṣā' from vibhāṣā ghrādheṭ…; hence Bhaṭṭoji's gloss. Followed: the bracketed anuvṛtti in sutra_en.
- commentary BM on 'ekavacanaṃ taśabdo gṛhyate': not also the ta that replaces the madhyama-puruṣa plural of the parasmaipada. In yūyam ataniṣṭa / atāniṣṭa (luṅ, madhyama-puruṣa plural, with sic and optional vṛddhi) there is no optional luk of sic. Followed: the bracket on yūyam ataniṣṭa.
- commentary TB (sk.2547.t1): ataniṣṭa, atāniṣṭa — ta [for tha] by tasthasthamipām…, and vṛddhi optionally by ato halādeḥ…. Followed: 'whose ta replaces tha' in the bracket on yūyam ataniṣṭa.
- commentary BM reads 'anudāttopadeśety anunāsikalopas taṅīti' as one statement: in taṅ — before ta (prathama-puruṣa singular) and thās (madhyama-puruṣa singular) — with luk of sic, the n is deleted by anudāttopadeśa…; hence atata / ataniṣṭa, atathāḥ / ataniṣṭhāḥ. Followed: 'in taṅ' construed with the nasal-deletion, and the labels.
- commentary TB (sk.2547.t1): atata — with luk of sic by tanādibhyas tathāsoḥ, the nasal is deleted; ataniṣṭa — iṭ in the option without luk. Followed: the labels on atata / ataniṣṭa.
- commentary BM: ṣaṇu has initial ṣ in upadeśa; forms like tanu; asāta — the form with luk of sic; asaniṣṭa — iṭ; with no jhal-initial [affix] following, there is no ā. Followed: the brackets on asāta and asaniṣṭa.
- commentary TB (sk.2547.t1): ṣaṇu is n-final, its ṇ being secondary (lākṣaṇika); hence in yaṅluk saṃsanti, saṃsante, with anusvāra and parasavarṇa. kṣaṇu and kṣiṇu likewise have secondary ṇ, with anusvāra and parasavarṇa in the forms TB cites. Recorded.
- commentary BM: kṣaṇu is a-penultimate ('vajre 'dhvaryuḥ kṣaṇvīta', in the Taittirīya); kṣiṇu ca is i-penultimate, 'this too [is] in injuring' ('vajre 'dhvaryuḥ kṣiṇvīta', a reading of another śākhā cited in the Śābarabhāṣya). Objection: why no guṇa of the light penultimate i in kṣiṇoti on account of the affix u? Hence Bhaṭṭoji's 'upratyayanimittaḥ'. On ṛṇu: 'here too, as with kṣiṇu, guṇa and its absence by difference of views: ṛṇoti, arṇoti; so also further on'; arṇvanti — yaṇ by iko yaṇ aci. Followed: 'also [in injuring]'.
- commentary BM on karoti: guṇa of ṛ on account of the affix u, with raparatva; guṇa of the u on account of tip. kurutaḥ: since tas is ṅit, the u takes no guṇa. With kuru + anti, yaṇ by iko yaṇ aci; with kurv + anti, lengthening by hali ca is anticipated, hence 'na bha…'. Followed: the brackets on karoti, kurutaḥ, yaṇ and kurvanti.
- textual Collation against the 1915 print (NSP p. 414, scan page-0424, read; batch03). (1) Ours 'hmayanta' has lost the virāma of 'hmyanta' (SK 2299 hmyantakṣaṇa…); the print reads 'hmyanta–2299'. (2) Ours 'arṇitāse'; the print and Wikisource read 'arṇitāsi'. (3) After 'tṛṇute' the print has 'tarṇute', which ours omits; Wikisource has 'tṛṇute-tarṇute'. The English follows the print, supplying '[, tarṇute]' in brackets. Dhātu numbers are one lower than the print's (print 1464 tanu … 1473 ḍukṛñ); given as transmitted.
- textual The digital source marks the paribhāṣā as '[(paribhāṣā –) saṃjñāpūrvako vidhir anityaḥ]'; the print marks it with '(pa)' before the words. The label '(paribhāṣā)' is kept; the brackets are editorial. In the markup 'ṛṇoti' stands inside the dhātu-gloss brackets ('ṛṇu gatau ṛṇoti'); the print has '1468 ṛṇu gatau | ṛṇoti |'.
- textual NSP footnote, printed at the foot of p. 414 (scan page-0424) and run by the OCR into the TB now filed as sk.2547.t1 (formerly in sk.2546.t1): '1 ātreyādaya iti — atrārucis tu saṃjñāpūrvakasya vidher anityatve bhāṣyānuktatvam' (read from the scan; the OCR has 'atrāracittu saṃśvā…'). It means: 'on the words ātreyādayaḥ — the reason for dissatisfaction [with this view] is that the Bhāṣya does not state that an operation enjoined by means of a saṃjñā is not obligatory'.
- textual BM on SK 2548 (nityaṃ karoteḥ) and SK 2549 (ye ca) is filed at the tail of sk.2547.b1 ('nityaṃ karoteḥ | utaś ca pratyayād ity anuvartate … tanādibhya ityādi'); Wikisource (uttara-2/0072) has the same text there.
- textual Filing: the opening of sk.2547.b1, from 'atha tanādayaḥ | atha uvikaraṇadhātavo nirūpyante' to the lead-in 'luṅas taṅi prathamaikavacane … viśeṣam āha', is BM on the tanādi heading and on tanu (k1, first paragraph); it was re-filed 2026-10-05 from the tail of sk.1278.b1 (p28) and prepended here. Against Wikisource (uttara-2/0070) it agrees in substance, except that for tanvanti ours has yaṇ by iko yaṇ aci where Wikisource has yaṇ by huśnuvoḥ, blocking uvaṅ; the English gives no rule for tanvanti and is unaffected.
- translator The labels, and the brackets on tanvaḥ / tanuvaḥ and tanu, are the translator's. tanvaḥ shows the optional deletion of u before v by lopaś cāsyānyatarasyāṃ mvoḥ (SK 2333). tanu is loṭ with hi deleted by utaś ca pratyayād asaṃyogapūrvāt (SK 2334). The kaumudī does not cite these rules; BM (opening of sk.2547.b1) does. 'Candra' is the grammarian Candragomin (cāndra = of Candra); the identification is the translator's.