6.2.97
द्विगौ क्रतौ
Operational rule vidhi
Before a द्विगु समास (Numeral Determinative Compound), when the compound denotes a sacrifice, the last syllable of the first member has the acute accent (उदात्त).
Word by word (padaccheda)
Right context द्विगौ saptamī · ekavacanaRight context क्रतौ 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
द्विगौ क्रतौ
Pāṇini leaves out words that carry over from earlier sūtras. Expand to see the rule as a reader actually understands it.
Commentary
Before a द्विगु समास (Numeral Determinative Compound), when the compound denotes a sacrifice, the last syllable of the first member has the acute accent (उदात्त).
Thus गर्ग꣡त्रिरात्रः, चारक꣡त्रिरात्रः, कुसुरुविन्द꣡सप्तरात्रः = गर्गाणां त्रिरात्रः &c. Why do we say 'before a Dvigu compound'? Observe अतिरात्रः꣡ (रात्रिमतिक्रान्त इति प्रादिसमासः) which being formed by the Samasanta affix अच् 5.4.87 has acute on the final 6.1.163. Why do we say 'when denoting a sacrifice'? Observe बिल्वसप्तरात्रः = बिल्वशतस्य बिल्वहोमस्य वा सप्तरात्रः ॥
Śrīśa Chandra Vasu, The Ashtadhyayi of Panini (1897), via ashtadhyayi.com.