4.3.42
कोशाड्ढञ्
Operational rule vidhi
The affix ढञ् comes after the words कोश etc. in the sense of 'adapted to that'.
Word by word (padaccheda)
Left context कोशात् 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
कोशात् ढञ्
Pāṇini leaves out words that carry over from earlier sūtras. Expand to see the rule as a reader actually understands it.
Commentary
The affix ढञ् comes after the words कोश etc. in the sense of 'adapted to that'.
This debars अण् ॥ Thus कोशे संभूतं = कौशेयं वस्त्रम् 'silken clothes'.
The word कोश means 'cocoon.' कौशेयः may literally therefore mean 'anything suited to the cocoon,' and may apply to the caterpillar as well as to the silk made out of cocoon. The word कौशेय is however रूढि and means 'silken.' Nor does it mean 'suited to the sheath,' as a sword, though kosa means 'sheath' also. This sutra would have been more properly placed after 4.3.134, under the heading of विकार rather than of संभूत ॥
In fact after the sutra एण्या-ढञ् 4.3.159, the addition of कोशाच्च would have been more appropriate.
Śrīśa Chandra Vasu, The Ashtadhyayi of Panini (1897), via ashtadhyayi.com.