नृ चान्यतरस्याम्

Operational rule vidhi

After नृ , a case-ending beginning with भ or स is optionally unaccented.

Word by word (padaccheda)

Word नृ Indeclinable च avyayaRight context अन्यतरस्याम् saptamī · ekavacana

Word Case not marked in the source data.
Indeclinable An avyaya such as च "and", वा "optionally", न "not".
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").

Dotted words are technical terms, dashed ones pratyāhāras (names for classes of sounds or affixes). Hover or tap one to see its card.

Full reading

नृ च अन्यतरस्याम्

Pāṇini leaves out words that carry over from earlier sūtras. Expand to see the rule as a reader actually understands it.

Commentary

After नृ , a case-ending beginning with भ or स is optionally unaccented.
Thus नृ꣡भिः or नृभिः꣡, नृभ्यः꣡, नृभ्यः꣡, नृ꣡भ्याम्, नृभ्या꣡म् , नृ꣡षु, नृषु꣡ ॥ But not so श्रा꣡, त्रे꣡ ॥

Śrīśa Chandra Vasu, The Ashtadhyayi of Panini (1897), via ashtadhyayi.com.