7.4.25
अकृत्सार्वधातुकयोर्दीर्घः
Operational rule vidhi
A long is substituted for the final vowel of the अङ्ग (stem) before an affix beginning with य् having an indicatory क् or ङ् , when it is not a कृत् or a सार्वधातुक affix.
Word by word (padaccheda)
Right context अकृत्सार्वधातुकयोः saptamī · dvivacanaSubstitute / term prathamā · ekavacana
- 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
अकृत्सार्वधातुकयोः
Pāṇini leaves out words that carry over from earlier sūtras. Expand to see the rule as a reader actually understands it.
Commentary
A long is substituted for the final vowel of the अङ्ग (stem) before an affix beginning with य् having an indicatory क् or ङ् , when it is not a कृत् or a सार्वधातुक affix.
Thus भृशायते, सुखायते, and दुःखायते with the Denominative affix क्यङ् according to 3.1.12 and 3.1.18. चीयते and स्तूयते with the Passive यक्, चेचीयते and तोष्टूयते with the Intensive यङ्, and चीयात् and स्तूयात् in the Benedictive (See 3.4.116. But प्रकृत्य and प्रहृत्य where the affix ल्यप् is krit, and had the vowel been lengthened by this subsequent rule, the antecedent तुक् augment would have been debarred 6.1.71. And चिनुयात् and सुनुयात् where the Personal endings of the Potential are sarvadhatuka. The phrase क्ङिति is understood in this sutra, so there is no lengthening before non-kit and non-nit affixes, as, उरुया, धृष्णुया, formed by या under 7.1.39.
Śrīśa Chandra Vasu, The Ashtadhyayi of Panini (1897), via ashtadhyayi.com.