The vṛttis (complex formations) are five, in the form of: kṛt [derivatives], taddhita [derivatives], samāsa, ekaśeṣa, and dhātus [ending in] san and the rest. "A vṛtti is the expression of a meaning [that belongs] to another (parārtha-abhidhāna)." "The vigraha (analytic paraphrase) is the sentence (vākya) that makes known the meaning of the vṛtti." It is of two kinds: laukika (belonging to ordinary usage) and alaukika (not belonging to ordinary usage). The laukika [vigraha] is correct (sādhu), because it is fully formed (pariniṣṭhita). The alaukika is incorrect (asādhu), unfit for use (prayoga). For example: rājñaḥ puruṣaḥ ("the king's man") [is laukika]; rājan as puruṣa su [i.e. the stems with their sup endings, the genitive singular as and the nominative singular su, is alaukika].
A nitya-samāsa (obligatory compound) is one that has no vigraha, or one whose vigraha is not made with its own padas (asvapada-vigraha).
That samāsa is of four kinds is a statement of what generally holds (prāyovāda), because [samāsa] is prescribed by saha supā (SK 649) also for those [compounds] that lie outside the adhikāras of avyayībhāva, tatpuruṣa, bahuvrīhi and dvandva.
The ancients' saying (pravāda) as well — "the avyayībhāva has the meaning of the prior member (pūrvapada) as predominant; the tatpuruṣa has the meaning of the subsequent member (uttarapada) as predominant; the bahuvrīhi has the meaning of another word (anyapada) as predominant; the dvandva has the meaning of both members as predominant" — is intended [only] as holding generally (prāyo 'bhiprāyaḥ), because [this] is absent in avyayībhāvas such as sūpaprati and unmattagaṅgam, in tatpuruṣas such as atimāla, in bahuvrīhis such as dvitrāḥ, and in dvandvas such as dantoṣṭham.
The karmadhāraya is a particular [kind of] tatpuruṣa; the dvigu is a particular [kind] of that [karmadhāraya]. Having many padas (anekapadatva) belongs only to dvandva and bahuvrīhi; for the tatpuruṣa it has been stated [that this occurs] only in some cases.
Moreover:
(Verse) "Of sup with sup, with tiṅ, with a nāman (nominal stem), [and] with a dhātu; then of tiṅ with tiṅ, [and of tiṅ] with a subanta — thus samāsa is to be known by the wise as of six kinds."
[sup] with sup: rājapuruṣaḥ. [sup] with tiṅ: paryabhūṣayat. [sup] with a nāman: kumbhakāraḥ. [sup] with a dhātu: kaṭaprūḥ; ajasram. tiṅ with tiṅ: pibatakhādatā; khādatamodatā. tiṅ with sup: the [action] in which [one says] "kṛnta vicakṣaṇa" ("cut, O clever one!") is kṛntavicakṣaṇā. The samāsa [in these] is because "ehīḍādayo 'nyapadārthe ca" ("and ehīḍa and the rest, in the sense of another word's meaning") is read in the mayūravyaṃsakādi [list] (the list headed by mayūravyaṃsaka).
- textual Several evident slips in the source are translated on the intended reading and not emended: 'parārārthābhidhānaṃ' for parārthābhidhānaṃ (a doubled syllable); 'vākyaḥ vigrahaḥ' for vākyaṃ vigrahaḥ; 'bahirbhūtānam api' for bahirbhūtānām api; 'giṅā' in the verse for tiṅā (the examples that follow have 'tiṅā'); 'danoṣṭham' for dantoṣṭham (the samāhāra dvandva 'teeth and lips').
- textual The source's 'kṛttaddhitasamāsaikaśeṣasanādyadhāturūpāḥ' has 'sanādya-dhātu', where sanādyanta-dhātu ('dhātus ending in san and the rest') is expected (compare sanādyantā dhātavaḥ, A 3.1.32). Translated as 'dhātus [ending in] san and the rest', with the ending supplied in brackets.
- translator 'saha supā' (SK 649) is A 2.1.4. The 'mayūravyaṃsakādi [list]' is the gaṇa of mayūravyaṃsakādayaś ca (A 2.1.72, SK 754), where the gaṇasūtra ehīḍādayo 'nyapadārthe is read. The source's own form of that gaṇasūtra here carries a final 'ca'.