7.1.59
शे मुचादीनाम्
Operational rule vidhi
The verb roots that belong to the मुचादि-अन्तर्गण, get a नुम्-आगम when followed by 'श' प्रत्यय.
Word by word (padaccheda)
Right context शे saptamī · ekavacanaTarget मुचादीनाम् ṣaṣṭhī · bahuvacana
- Right context Saptamī (7th case): "when X follows", the operation applies to what precedes (1.1.66 तस्मिन्निति निर्दिष्टे पूर्वस्य). Also a condition or domain ("in the sense of").
- Target Ṣaṣṭhī (6th case): names what gets replaced, "in place of X" (1.1.49 षष्ठी स्थानेयोगा).
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Full reading
शे मुचादीनाम्
Pāṇini leaves out words that carry over from earlier sūtras. Expand to see the rule as a reader actually understands it.
Commentary
In मुच् etc. Before the characteristic श of the तुदादिगणः (6th Conjugation) the न् is added after the vowel of the root.
Thus मुचृल् — मुञ्चति, लुम्पति, विन्दति, लिम्पति, सिञ्चति, कृन्तति, खिन्दति, पिंशति ॥ Why "before श"? Observe मोक्ता, मोक्तुम्, मोक्तव्यम् ॥ Why "of मुच् &c"? Observe तुदति, नुदति ॥
Vart:- The तृम्फ &c should be also enumerated. These are the following roots of Tudadi class : 24. तृप (तृफ), 25. तृन्फ तप्तौ, 26. तुप तुम्प, 27. तुफ तुम्फ, हिंसायाम्, 28. दृफ (दृप), 29. दृम्फ उत्क्लेशे, 30. ऋफ (रिफ), ऋम्फ (रिम्फ), हिंसायाम्, 31. गुफ, गुम्फ ग्रन्थे, 32. उभ उन्भ पूरणे, 33. शुभ, शुम्भ शोभार्थे ॥ Of these, those which have a nasal, lose it by 6.4.24, and then get the नुम् augment by the present rule, which being specifically ordained, cannot be again dropped. Thus तृम्फति, तुम्फति, तुम्पति, दृम्फति &c. Those which have no nasal, are conjugated as तृफति, तुफति, दृफति गुफति, उभति and शुभति ॥
Śrīśa Chandra Vasu, The Ashtadhyayi of Panini (1897), via ashtadhyayi.com.