6.1.222
चौ
Operational rule vidhi
In compound words ending in अञ्च् , the final vowel of the preceding word has the acute accent in the weak cases in which only च् of अञ्च् remains.
Word by word (padaccheda)
Right context चौ 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").
Full reading
चौ
Pāṇini leaves out words that carry over from earlier sūtras. Expand to see the rule as a reader actually understands it.
Commentary
In compound words ending in अञ्च् , the final vowel of the preceding word has the acute accent in the weak cases in which only च् of अञ्च् remains.
Thus द꣡धीचः पश्य; द꣡धीचा, दधी꣡चेः मधू꣡चः पश्य, मधू꣡चा, मधू꣡चे ॥ This is an exception to 6.1.161, 6.1.170 and 6.2.52.
Vart:- This rule does not apply before a Taddhita affix. As दाधीचः꣡, माधूचः꣡ ॥ Here the accent is regulated by the affix 3.1.3.
Śrīśa Chandra Vasu, The Ashtadhyayi of Panini (1897), via ashtadhyayi.com.