5.1.92
सम्परिपूर्वात् ख च
Operational rule vidhi
When the affixes ख (ईन) and छ (ईय) come in the छन्दस् (Vedas) in the five-fold senses taught in पन्थो ण नित्यम् (5.1.76), तमधीष्टो भृतो भूतो भावी (5.1.80), after the word वत्सर , when preceded by सम् and परि.
Word by word (padaccheda)
Left context सम्- परि- पूर्वात् pañcamī · ekavacanaWord ख Indeclinable च avyaya
- Left context Pañcamī (5th case): "after X", the operation applies to what follows (1.1.67 तस्मादित्युत्तरस्य). Also used for limits and sources.
- Word Case not marked in the source data.
- Indeclinable An avyaya such as च "and", वा "optionally", न "not".
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Full reading
सम्-
Pāṇini leaves out words that carry over from earlier sūtras. Expand to see the rule as a reader actually understands it.
Commentary
When the affixes ख (ईन) and छ (ईय) come in the छन्दस् (Vedas) in the five-fold senses taught in पन्थो ण नित्यम् 5.1.76, तमधीष्टो भृतो भूतो भावी 5.1.80, after the word वत्सर , when preceded by सम् and परि।
Thus संवत्सरीणः and संवत्सरीयः, परिवत्सरीणः and परिवत्सरीयः ॥
Śrīśa Chandra Vasu, The Ashtadhyayi of Panini (1897), via ashtadhyayi.com.