पाशादिभ्यो यः

Operational rule vidhi

The words of पाशादिगण get the प्रत्यय 'य' in the meaning of 'तस्य समूहः'

Word by word (padaccheda)

Left context पाश- आदिभ्यः pañcamī · bahuvacanaSubstitute / term यः prathamā · ekavacana

Left context Pañcamī (5th case): "after X", the operation applies to what follows (1.1.67 तस्मादित्युत्तरस्य). Also used for limits and sources.
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.

पाश-आदिभ्यः यः

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

The affix य comes in the sense of 'collection thereof' after the words पाश etc.
Thus पाश्या, तृण्या &c. These words are feminine.

1 पाश, 2 तृण, 3 धूम, 4 वात, 5 अङ्गार, 6 पाढल (पाटलका K.), 7 पोत, 8 गल, 9 पिटक, 10 पिटाक, 11 शकट, 12 हल, 13 मट (नड K.), 14 वन. also 15 बालक.

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