8.2.65
म्वोश्च
Operational rule vidhi
न is substituted for the म of a root before the affixes beginning with म and व.
Word by word (padaccheda)
Right context म्वोः saptamī · dvivacanaIndeclinable च avyaya
- 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").
- Indeclinable An avyaya such as च "and", वा "optionally", न "not".
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Full reading
म्वोः च
Pāṇini leaves out words that carry over from earlier sūtras. Expand to see the rule as a reader actually understands it.
Commentary
न is substituted for the म of a root before the affixes beginning with म and व।
As अगन्म, अगन्व the Imperfect of गम्, as in the sentence अगन्म तमसः पारम् ॥ The शप् is elided as a Vedic diversity. So also जगन्वान् with क्वसु, the augment इट् is not added by the option allowed, owing to 7.1.68. This sutra applies to those cases where the म is not at the end of a word, as it was in the last sutra.
Śrīśa Chandra Vasu, The Ashtadhyayi of Panini (1897), via ashtadhyayi.com.