6.1.40
वेञः
Operational rule vidhi
The semi-vowel of वे 'to weave' is not vocalised in the Perfect.
Word by word (padaccheda)
Target वेञः ṣaṣṭhī · ekavacana
- Target Ṣaṣṭhī (6th case): names what gets replaced, "in place of X" (1.1.49 षष्ठी स्थानेयोगा).
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Full reading
वेञः
Pāṇini leaves out words that carry over from earlier sūtras. Expand to see the rule as a reader actually understands it.
Commentary
The semi-vowel of वे 'to weave' is not vocalised in the Perfect.
Thus ववौ, ववतुः, ववुः ॥ This root belongs to यजादि class and would have been vocalised before कित् affixes by 6.1.15; and before non-कित् affixes the Reduplicate syllable of the Perfect would have been vocalised by 6.1.17. Both vocalisations are prohibited here.
Śrīśa Chandra Vasu, The Ashtadhyayi of Panini (1897), via ashtadhyayi.com.