3.3.59
उपसर्गेऽदः
Operational rule vidhi
The affix अप् comes after the verb अद् 'to eat' when an उपसर्ग is in composition.
Word by word (padaccheda)
Right context saptamī · ekavacanaLeft context अदः pañcamī · 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").
- Left context Pañcamī (5th case): "after X", the operation applies to what follows (1.1.67 तस्मादित्युत्तरस्य). Also used for limits and sources.
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Full reading
अदः
Pāṇini leaves out words that carry over from earlier sūtras. Expand to see the rule as a reader actually understands it.
Commentary
The affix अप् comes after the verb अद् 'to eat' when an उपसर्ग is in composition.
As विघसः (11.4. 38) 'half-chewed morsel'; प्रघसः 'voracious'.
Why do we say 'when compounded with an upasarga'? Observe घासः 'grass'; अद् + घञ् = घस् + अ 2.4.38.
Śrīśa Chandra Vasu, The Ashtadhyayi of Panini (1897), via ashtadhyayi.com.