3.3.22
उपसर्गे रुवः
Operational rule vidhi
The affix घञ् comes after the verb रू 'to roar' when it has an उपसर्ग in composition with it.
Word by word (padaccheda)
Right context saptamī · ekavacanaLeft context रुवः 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
रुवः
Pāṇini leaves out words that carry over from earlier sūtras. Expand to see the rule as a reader actually understands it.
Commentary
The affix घञ् comes after the verb रू 'to roar' when it has an उपसर्ग in composition with it.
This debars अप् 3.3.57. As संरावः 'clamour', उपरावः &c.
Why do we say 'compounded with an upasarga'? Observe रवः 'sound'.
Śrīśa Chandra Vasu, The Ashtadhyayi of Panini (1897), via ashtadhyayi.com.