Rule. The affix san comes optionally, in the sense of wishing (icchā), after a dhātu. Two conditions hold. The dhātu's action must be the object (karman) of the wishing. And it must have the same agent (samānakartṛka) as the wishing. Bhaṭṭoji's gloss: "let the affix san optionally come, in the sense of wishing, after a dhātu that is the object of iṣ 'to wish' and has one and the same agent as iṣ".
The word san is carried forward (anuvṛtti) from guptijkidbhyaḥ san (SK 2393), one of Bhaṭṭoji's commentators notes. Both commentators say that "object" and "same agent" are measured against the wishing alone, since the sūtra names the wishing.
Bhaṭṭoji adds the key point. This san is prescribed "after a dhātu" (dhātoḥ). So it is ārdhadhātuka, and so it takes iṭ. One of his commentators explains why the word dhātoḥ matters. Only an affix taught with that word is ārdhadhātuka. The san of jugupsate (SK 2393) is not taught so. If it were ārdhadhātuka, its light penultimate would take guṇa.
Example.
paṭhitum icchati, "he wishes to read":
paṭh + san (this rule); n is a marker → paṭh + sa
→ san is ārdhadhātuka and begins with s, a val consonant; it takes iṭ (SK 2184) → paṭh + i + sa
→ s after i becomes ṣ (SK 212) → paṭh-iṣa
→ the form ends in san, so it is doubled (SK 2395) → paṭh paṭhiṣa
→ only the first consonant stays in the abhyāsa (SK 2179) → pa paṭhiṣa
→ a of the abhyāsa becomes i before san (SK 2317, sanyataḥ) → pi paṭhiṣa
→ pipaṭhiṣa ends in san, so it is a dhātu (SK 2304)
→ laṭ, the ending tip, the class-sign śap → pipaṭhiṣa + a + ti
→ a + a gives one a (pararūpa, SK 191) → pipaṭhiṣati.
One of Bhaṭṭoji's commentators gives the sense: "he wishes reading done by himself". The san shows that the reading is what is wished, and that the reader is the one who wishes.
Applies when / blocked by. Bhaṭṭoji tests each word of the sūtra.
- Why "the object"? In gamanena icchati, "he wishes by going", the going is the instrument (karaṇa). So no san.
- Why "the same agent"? In śiṣyāḥ paṭhantv iti icchati guruḥ, "the teacher wishes, 'Let the pupils read'", the readers are not the one who wishes. So no san.
- Why "optionally"? So that the analytic sentence (vākya) paṭhitum icchati is also used.
Example 2: jighatsati. attum icchati, "he wishes to eat". Bhaṭṭoji recalls two rules from earlier chapters.
ad + sa
→ ghas replaces ad before san (SK 2427, luṅsanor ghasḷ) → ghas + sa
→ no iṭ: ghas is a one-vowelled root that refuses it (SK 2246) → ghas + sa
→ the s of ghas becomes t before an ārdhadhātuka in s (SK 2342) → ghat + sa
→ doubling (SK 2395) → ghat ghatsa → the first consonant stays (SK 2179) → gha ghatsa
→ in the abhyāsa gh becomes a palatal (SK 2245) and then unaspirated (SK 2182) → ja ghatsa
→ i for a (SK 2317) → jighatsa → jighatsati.
One of Bhaṭṭoji's commentators gives these steps, with the two changes in the abhyāsa.
Example 3: īrṣyiyiṣati, īrṣyiṣiṣati. From īrṣy "to envy". In chapter 54 you met the vārttika īrṣyates tṛtīyasya, "for īrṣy, [doubling] of the third". Bhaṭṭoji now applies it to san: "there is doubling of yi or of san". Both his commentators match each form to one reading of the vārttika.
- "The third consonant": r is not doubled (SK 2446), and the third consonant is y.
īrṣy + i + ṣa→ yi is doubled →īrṣ yi yi ṣa→īrṣyiyiṣati. - "The third single-vowelled part (ekāc)": the parts are īrṣ, ṣyis, sa. The third, sa, is doubled →
īrṣyi sa sa→ i in the abhyāsa →īrṣyi si sa→ both s become ṣ (SK 212) →īrṣyiṣiṣati.
How the first form should be spelled, scholars discuss this.
Watch out. Two *san*s now stand side by side. The san of SK 2393 (jugupsate) is in the root's own sense and is not ārdhadhātuka. The san of this rule is the desiderative, and it is ārdhadhātuka. A third use, san in the sense of apprehension, comes as a vārttika under SK 2622. Whether a desiderative san can follow another san is settled at the end of the chapter, under SK 2628.
Let the affix (pratyaya) san optionally come, in the sense of wishing, after a dhātu that is the object of iṣi ('wishing') and has one and the same agent as iṣi [— 'san' carried forward (anuvṛtti) from SK 2393]. Because it is prescribed after a dhātu ('dhātoḥ'), san here is ārdhadhātuka. [Hence] iṭ. Doubling. sanyataḥ (SK 2317) [i for the a of the abhyāsa]. paṭhitum icchati ('wishes to read') = pipaṭhiṣati. Why 'karmaṇaḥ' ('[a dhātu that is] the object')? So that [san] does not come after [a dhātu that is] the instrument (karaṇa), as in gamanena icchati ('wishes by going'). Why 'samānakartṛkāt' ('having the same agent')? [Consider] śiṣyāḥ paṭhantv iti icchati guruḥ ('the teacher wishes, "Let the pupils read"'). Because 'vā' ('optionally') is mentioned, in the alternative the [analytic] sentence (vākya) too [is used]. By luṅsanor ghasḷ (SK 2427) [ghas replaces ad before san], and by ekāca upadeśe… (SK 2246) there is no iṭ. t replaces the s [of ghas, by saḥ syārdhadhātuke, SK 2342]. attum icchati ('wishes to eat') = jighatsati. By the vārttika 'īrṣyates tṛtīyasya' [stated under SK 2607] there is doubling of yi or of san [according to the two interpretations of that vārttika]: īrṣyiyiṣati; īrṣyiṣiṣati.
- commentary BM: 'san' is carried forward (anuvartate) from 'guptijkidbhyaḥ' [SK 2393]. Because icchā is heard [in the sūtra], being the object is meant with respect to the wishing only, and having the same agent is likewise meant as determined by the wishing. 'karmaṇaḥ' construes with dhātoḥ by co-reference through the word that denotes [the action]. The result is: san optionally comes, in the sense of wishing, after a dhātu denoting an activity that is the object of the wishing, the agent being the same as that of the wishing. Followed: the anuvṛtti bracket and '[of the wishing]' / '[as the wishing]' in sutra_en, and the bracket in k1.
- commentary TB (NSP p. 433, scan page-0443, read; absent from our source.json, see the textual note): on 'iṣikarmaṇa ityādi' — since 'icchāyām' is heard, both being the object and being the agent are taken in relation to it alone. Followed; agrees with BM.
- commentary BM on 'dhātoḥ': objection — 'dhātoḥ' is already got from 'samānakartṛkāt', since only the locus of the activity a dhātu denotes is an agent. Reply: 'dhātoḥ' is stated because ārdhadhātuka status belongs only to an affix prescribed with 'dhātoḥ', not to every affix that merely follows a dhātu; otherwise in jugupsate the san prescribed by 'guptijkidbhyaḥ' [SK 2393], though not prescribed with 'dhātoḥ', would become ārdhadhātuka, and guṇa of the light penultimate would follow. (Our BM text has lost these words by an eye-skip after 'anyathā jugupsate ity atra'; supplied from Wikisource uttara-2/0112: 'dhātor ity avihitasyāpi guptijkidbhyaḥ iti sana ārdhadhātukatvāpattau laghūpadhaguṇāpatter iti bhāvaḥ | asya sana'.) The result of the ārdhadhātuka status is given by 'iṭ'. Followed: '[Hence] iṭ'.
- commentary BM: 'dvitvam' is by sanyaṅoḥ [SK 2395]; 'sanyataḥ' recalls the rule giving i to the abhyāsa. In paṭhitum icchati, tumun is in the sense of bhāva, which is the dhātu's own meaning, the action of reading; san conveys that the reading is the object of the wishing and has the same agent as the wishing, so pipaṭhiṣati means 'wishes reading done by oneself'. Followed: '[i for the a of the abhyāsa]'.
- commentary TB (scan page-0443, read; not in our source.json) on 'paṭhitum icchati': the meaning is a present wish, residing in one [agent], having reading as its scope. Recorded.
- commentary BM: 'luṅsanor ghasḷ' recalls ghas for ad ('ada bhakṣaṇe') before san; with ghas sa standing and iṭ suspected, 'ekāca… neṭ'; then 'sasya tatvam' by saḥ syārdhadhātuke [SK 2342]; jighatsati with doubling and, in the abhyāsa, jaś- and cu-substitution. Followed: the bracketed ghas for ad and the citation of SK 2342.
- commentary TB (scan page-0443, read; not in our source.json) on 'yisanoḥ': on the 'third consonant' interpretation, doubling of y; on the 'third ekāc' interpretation, of san. Followed: '[according to the two interpretations]', with the first form assigned to the first interpretation and the second to the second.
- commentary BM's lemma is uncertain between its witnesses: our OCR of BM reads 'ysanoḥ' (y and san), while Wikisource (uttara-2/0113) reads 'yisanoḥ', as the kaumudī does. On the 'third consonant' interpretation, in īrṣy is the y alone is doubled and the s of san becomes ṣ, giving a form with two conjoined y's, which BM spells īrṣyyiṣati (ī r ṣ y y i ṣ a). On the 'third ekāc' interpretation, sa is doubled in īrṣy i sa, the abhyāsa takes i, and both s become ṣ: īrṣyiṣiṣati. Recorded: the kaumudī (ours = NSP p. 433, scan page-0443, read) has 'yi' and īrṣyiyiṣati, and TB under SK 2607 (sk.2607.t1) cites 'īrṣyiyiṣati' as the form to be given here. The English keeps the kaumudī's 'yi' and its form. Only BM's first form, on which both BM witnesses agree, differs from the kaumudī; it parallels BM's 'airṣyyat' under SK 2607.
- textual TB on this sūtra (on 'iṣikarmaṇa ityādi', 'paṭhitum icchatīti' and 'yisanoḥ'), and the opening of TB on SK 2609 ('rudavida— | rudasāhacaryād vetter eva grahaṇam | iha rudavidamuṣāṇāṃ grahaṇaṃ ralo vyupadhāt— iti vikalpe prāpte graheḥ na ktvā seṭ iti niṣedhāt ktvāyām aprāpte svapipracchyos tu'), are printed at the foot of NSP p. 433 (scan page-0443, read). They are missing from our source.json: the OCR page text stops at 'iti ṇyantaprakriyā', and the rest of TB on SK 2609 ('ktvaḥ kittve 'pi sanaḥ…'), which in ours ran on at the tail of sk.2607.t1, was re-filed to sk.2609.t1 on 2026-10-05.
- textual The print (NSP p. 433, scan page-0443, read) places its vārttika sign before 'īrṣyatestṛtīyasyeti'; ours has no mark. Wikisource cites it as (vā 3403). Wikisource's kaumudī gives the first form as 'īrṣyyiṣati', as BM does; ours and the print read 'īrṣyiyiṣati'. Otherwise ours matches the print. The print also has the colophon 'iti ṇyantaprakriyā' and the heading 'tiṅante sannantaprakriyā 52' immediately before this unit.
- translator The kaumudī's 'yi' in 'yisanoḥ' matches the doubled element of its own form īrṣyiyiṣati (īrṣ-yi-yi-ṣa-ti). TB and BM speak of the doubling of y. The English keeps 'yi'.