7.1.50
आज्जसेरसुक्
Operational rule vidhi
After a अङ्ग (stem) ending in अ or आ the affix अस् of the Nominative 1st-Case plural gets, in the छन्दस् (Vedas), the augment अस् (असुक्) at the end.
Word by word (padaccheda)
Left context आत् pañcamī · ekavacanaTarget जसेः ṣaṣṭhī · ekavacanaSubstitute / term असुक् 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.
- Target Ṣaṣṭhī (6th case): names what gets replaced, "in place of X" (1.1.49 षष्ठी स्थानेयोगा).
- 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
आत् जसेः असुक्
Pāṇini leaves out words that carry over from earlier sūtras. Expand to see the rule as a reader actually understands it.
जसेः → असुक् / आत्
Replace jaseḥ with asuk when it comes after āt. Inherited words (anuvṛtti) may add further conditions.
Commentary
After a अङ्ग (stem) ending in अ or आ the affix अस् of the Nominative 1st-Case plural gets, in the छन्दस् (Vedas), the augment अस् (असुक्) at the end.
Thus ब्राह्मणासः पितरः सोम्यासः for ब्राह्मणाः and सोम्याः ॥ Rig VI.75.10. ये पूर्वासो य उपरासः (Rig X. 15.2) for पूर्वे and उपरे ॥ So also पुतासः (Rig I.3.4) Why is not, after the adding of the augment असुक्, the जस् changed to शी in the last example, as required by 7.1.17, and on the maxim पुनः प्रसङ्गः विज्ञानात्? No, the maxim that applies here is सकृद् गतौ विप्रतिषेधे यद्बाधितं, तद्बाधितमेव ॥
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Śrīśa Chandra Vasu, The Ashtadhyayi of Panini (1897), via ashtadhyayi.com.