5.1.81
मासाद्वयसि यत्खञौ
Operational rule vidhi
The affixes यत् and खञ् come after the word मास in denoting 'age'.
Word by word (padaccheda)
Left context मासात् pañcamī · ekavacanaRight context वयसि saptamī · ekavacanaSubstitute / term यत्खञौ prathamā · dvivacana
- Left context Pañcamī (5th case): "after X", the operation applies to what follows (1.1.67 तस्मादित्युत्तरस्य). Also used for limits and sources.
- 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").
- Substitute / term Prathamā (1st case): in operational rules, the substitute or the thing introduced; in definitions, the term or its referent.
Dotted words are technical terms. Hover or tap one to see its card.
Full reading
मासात् वयसि यत्खञौ
Pāṇini leaves out words that carry over from earlier sūtras. Expand to see the rule as a reader actually understands it.
Commentary
The affixes यत् and खञ् come after the word मास in denoting 'age'.
This debars ठञ् ॥ The word भूतः of the previous sutra should be read into this. Thus मासंभूतः = मास्यः or मासीनः 'a month old'.
Why do we say when denoting 'age'? Observe मासिकः ॥
Śrīśa Chandra Vasu, The Ashtadhyayi of Panini (1897), via ashtadhyayi.com.