2.3.64
कृत्वोऽर्थप्रयोगे कालेऽधिकरणे
Operational rule vidhi
The 6th-Case-affix is used in denoting location (अधिकरण) after a word denoting time (काल) when used along with a word ending with an affix having the sense of कृत्वसुच् -- संख्यायाः क्रियाऽभ्यावृत्तिगणने कृत्वसुच् (5.4.17) 'so many times'.
Word by word (padaccheda)
Right context कृत्वोऽर्थ- प्रयोगे saptamī · ekavacanaRight context काले saptamī · ekavacanaRight context saptamī · 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").
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Full reading
कृत्वोऽर्थ-
Pāṇini leaves out words that carry over from earlier sūtras. Expand to see the rule as a reader actually understands it.
Commentary
The 6th-Case-affix is used in denoting location (अधिकरण) after a word denoting time (काल) when used along with a word ending with an affix having the sense of कृत्वसुच् -- संख्यायाः क्रियाऽभ्यावृत्तिगणने कृत्वसुच् 5.4.17 'so many times'.
Ex. पंचकृत्वोऽऽह्नोभुंक्ते 'he eats five times a day.' In short, 'words meaning so many times, or the numeral adverbs of frequency, govern the genitive of time in the sense of locative.' As द्विरह्नोऽधीते 'he studies twice in a day.'
Why do we say 'having the force of कृत्वसुच् ? Observe अह्नि शेते 'he sleeps in the day.'
This rule will not apply when the adverb of frequency is understood, not expressed (prayoga) as in अहनि भुक्तम्. Nor when the time is not meant, as द्विः कांस्यापात्र्यां भुंक्ते 'he eats in two brass vessels.' So also when location is not meant : as द्विरह्नो भुंक्ते. The शेष being understood we have द्विरहन्यधीते.
Śrīśa Chandra Vasu, The Ashtadhyayi of Panini (1897), via ashtadhyayi.com.