7.4.88
उत् परस्यातः
Operational rule vidhi
For the subsequent अ (i.e. for the अ of the root and not of the reduplicate), there is substituted उ in the Intensive (with expressed or elided यङ्).
Word by word (padaccheda)
Substitute / term उत् prathamā · ekavacanaTarget परस्य ṣaṣṭhī · ekavacanaTarget अतः ṣaṣṭhī · ekavacana
- Substitute / term Prathamā (1st case): in operational rules, the substitute or the thing introduced; in definitions, the term or its referent.
- Target Ṣaṣṭhī (6th case): names what gets replaced, "in place of X" (1.1.49 षष्ठी स्थानेयोगा).
Dotted words are technical terms. Hover or tap one to see its card.
Full reading
उत् परस्य अतः
Pāṇini leaves out words that carry over from earlier sūtras. Expand to see the rule as a reader actually understands it.
परस्य अतः → उत्
Replace parasya ataḥ with ut. Inherited words (anuvṛtti) may add further conditions.
Commentary
For the subsequent अ (i.e. for the अ of the root and not of the reduplicate), there is substituted उ in the Intensive (with expressed or elided यङ्).
The examples have been given above, as चंचूर्यते, चंचूरीते and पंफुल्यते पंफुलीते ॥ Why do we say 'the अ which stands subsequent to the reduplicate'? The substitute does not replace the अ of the reduplicate. Why do we say 'of अ'? The substitute should not replace the final letter, which it otherwise would have done by 1.1.52. The त् in उत् debars guna 7.3.86 in चंचूर्ति and पंफुलीति, for though उ is lengthened by 8.2.77, in चंचूर्ति, yet that lengthening is considered as non-existent or asiddha 8.2.1 for the purposes of Guna 7.3.86. Quere. If the त् in उत् debars guna, why should it not debar lengthening also of 8.2.7?
Śrīśa Chandra Vasu, The Ashtadhyayi of Panini (1897), via ashtadhyayi.com.