5.3.45
द्वित्र्योश्च धमुञ्
Operational rule vidhi
The substitute धमुञ् comes optionally in the place of धा after the words 1. द्वि and 2. त्रि.
Word by word (padaccheda)
Target द्वि- त्र्योः ṣaṣṭhī · dvivacanaIndeclinable च avyayaSubstitute / term धमुञ् prathamā · ekavacana
- Target Ṣaṣṭhī (6th case): names what gets replaced, "in place of X" (1.1.49 षष्ठी स्थानेयोगा).
- Indeclinable An avyaya such as च "and", वा "optionally", न "not".
- Substitute / term Prathamā (1st case): in operational rules, the substitute or the thing introduced; in definitions, the term or its referent.
Dotted words are technical terms. Hover or tap one to see its card.
Full reading
द्वि-
Pāṇini leaves out words that carry over from earlier sūtras. Expand to see the rule as a reader actually understands it.
द्वि-
Replace dvi-tryoḥ with dhamuñ. Inherited words (anuvṛtti) may add further conditions.
Commentary
The substitute धमुञ् comes optionally in the place of धा after the words 1. द्वि and 2. त्रि।
Here also it comes in both the विधार्थ and अधिकरण विचाल senses. By च, the word 'optionally' is drawn into the sutra. Thus द्विधा or द्वैधम्, त्रिधा, or त्रैधम् ॥
Vart:- The affix ड (da, with the elision of the final vowel) comes without changing the sense, after words ending in dhamun. As द्वैध, त्रैध, in पथि द्वैधानि संश्रयन्ते, मति त्रैधानि संश्रयन्ते ॥
Śrīśa Chandra Vasu, The Ashtadhyayi of Panini (1897), via ashtadhyayi.com.