5.1.89
चित्तवति नित्यम्
Operational rule vidhi
The affixes meaning 'accomplished' etc. पन्थो ण नित्यम् (5.1.76), तमधीष्टो भृतो भूतो भावी (5.1.80) are necessarily elided after the word वर्षा forming a द्विगु समास (Numeral Determinative Compound) when it refers to being endowed with reason.
Word by word (padaccheda)
Right context चित्तवति saptamī · ekavacanaSubstitute / term नित्यम् 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.
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Full reading
चित्तवति नित्यम्
Pāṇini leaves out words that carry over from earlier sūtras. Expand to see the rule as a reader actually understands it.
Commentary
The affixes meaning 'accomplished' etc. पन्थो ण नित्यम् 5.1.76, तमधीष्टो भृतो भूतो भावी 5.1.80 are necessarily elided after the word वर्षा forming a द्विगु समास (Numeral Determinative Compound) when it refers to being endowed with reason.
Here the elision is compulsory and not optional as in the last. Thus द्विवर्षो दारकः 'a boy two years old'. Why do we say चित्तवति "when meaning endowed with reason" ? Observe द्विवर्षीणो व्याधिः ॥
Śrīśa Chandra Vasu, The Ashtadhyayi of Panini (1897), via ashtadhyayi.com.