6.1.174
उदात्तयणो हल्पूर्वात्
Operational rule vidhi
The same endings have the acute accent, when for the acutely accented final vowel of the stem, a semi-vowel is substituted, and which is preceded by a consonant.
Word by word (padaccheda)
Left context उदात्तयणः pañcamī · ekavacanaLeft context - पूर्वात् pañcamī · ekavacana
- Left context Pañcamī (5th case): "after X", the operation applies to what follows (1.1.67 तस्मादित्युत्तरस्य). Also used for limits and sources.
Dotted words are technical terms, dashed ones pratyāhāras (names for classes of sounds or affixes). Hover or tap one to see its card.
Full reading
उदात्तयणः -
Pāṇini leaves out words that carry over from earlier sūtras. Expand to see the rule as a reader actually understands it.
Commentary
The same endings have the acute accent, when for the acutely accented final vowel of the stem, a semi-vowel is substituted, and which is preceded by a consonant.
Thus क॒र्तृ꣡ + ई = क॒र्त्री꣡; क॒र्त्रा꣡, ह॒र्त्री꣡, ह॒र्त्रा꣡, प्र॒ल॒वि॒त्री꣡, प्रलवित्रा꣡ ॥ प्र॒स॒वि॒त्री꣡, प्र॒स॒वि॒त्रा꣡ ॥ All these are तृच् ending words and have consequently acute accent on the final 6.1.63. Why 'acutely accented final vowel is replaced &c'? Observe क꣡र्त्री, क꣡र्त्रा, ह꣡र्त्री, ह꣡र्त्रा, formed by तृन् having acute on the first syllable. Why do we say 'preceded by a consonant'? Observe बहुतित॒उ꣡ — बहुतित॒वा॑ ब्राह्मण्या 8.2.4 बहूनि तितऊनि अस्या इति बहुव्रीहिः ॥ This compound with बहु gets udatta on the final by 6.2.175. In making the Instrumental singular of बहुतितउ, the उ is replaced by व्, but as this व् is preceded by a vowel, the affix gets the svarita accent.
Vart:- The rule applies when the stem ends in न् though not in a semi-vowel, as वाक्पत्नी꣡, चित्प॒त्नी꣡ ॥
Śrīśa Chandra Vasu, The Ashtadhyayi of Panini (1897), via ashtadhyayi.com.