4.2.85
नद्यां मतुप्
Operational rule vidhi
The affix मतुप् is added denoting a river.
Word by word (padaccheda)
Right context नद्याम् saptamī · ekavacanaSubstitute / term म prathamā · 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").
- Substitute / term Prathamā (1st case): in operational rules, the substitute or the thing introduced; in definitions, the term or its referent.
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Full reading
नद्याम् मतुप्
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Commentary
The affix मतुप् is added denoting a river.
When the name of a river is to be designated by something which is found near it, we add the affix मतुप् (मत् and वत्). Thus उदुम्बरा꣡वती, मशका꣡वती, वीरणा꣡वती, पुष्करा꣡वती, इक्षु꣡मती, द्रु꣡मती ॥ See 6.3.119 by which the अ is lengthened in these words, and 6.1.219 by which the udatta is placed on this vowel. See 8.2.10 by which मत् becomes वत् ॥
The affix मतुप् is not however employed in forming the river-names भागीरथी and भैमरथी, which are formed by अण् added under 4.2.68.
Śrīśa Chandra Vasu, The Ashtadhyayi of Panini (1897), via ashtadhyayi.com.