5.2.123
ऊर्णाया युस्
Operational rule vidhi
The affix युस् is added to ऊर्णा in the sense of मतुप् in the छन्दस् (Vedas).
Word by word (padaccheda)
Left context ऊर्णायाः pañcamī · ekavacanaSubstitute / term युस् 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.
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Full reading
ऊर्णायाः युस्
Pāṇini leaves out words that carry over from earlier sūtras. Expand to see the rule as a reader actually understands it.
Commentary
The affix युस् is added to ऊर्णा in the sense of मतुप् in the छन्दस् (Vedas).
The स् of युस् makes the word ऊर्णा a पद 1.4.16; the result of which is that rules applicable to भ Bha do not apply; e. g. 6.1.148, by which the final इ or ई, अ or आ is elided. Thus ऊर्णायुः ॥ According to some; छन्दसि is to be read in this sutra. The author of Siddhanta Kaumudi says that this is reasonable; for if yus is added to urna in secular literature also, then there was no necessity of this sutra. The word urna could have been read along with aham and subham in 5.2.140.
Śrīśa Chandra Vasu, The Ashtadhyayi of Panini (1897), via ashtadhyayi.com.