4.3.40
उपजानूपकर्णोपनीवेष्ठक्
Operational rule vidhi
The affix ठक् comes in the sense of 'mostly to be found there' after the words 1. उपजानु 2. उपकरण and 3. उपोनीवि , being in the Locative -7th case.
Word by word (padaccheda)
Left context उपजानु- उपकर्ण- उपनीवेः pañcamī · ekavacanaSubstitute / term prathamā · ekavacana
- Left context Pañcamī (5th case): "after X", the operation applies to what follows (1.1.67 तस्मादित्युत्तरस्य). Also used for limits and sources.
- 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
उपजानु-
Pāṇini leaves out words that carry over from earlier sūtras. Expand to see the rule as a reader actually understands it.
Commentary
The affix ठक् comes in the sense of 'mostly to be found there' after the words 1. उपजानु 2. उपकरण and 3. उपोनीवि , being in the Locative -7th case.
This debars अण् &c. Thus औपजानुकः, औपकर्णिकः औपनीविकः ।
Śrīśa Chandra Vasu, The Ashtadhyayi of Panini (1897), via ashtadhyayi.com.