3.3.74
निपानमाहावः
Operational rule vidhi
The word आहाव is irregularly formed when meaning 'a trough'.
Word by word (padaccheda)
Substitute / term निपानम् prathamā · ekavacanaSubstitute / term आहावः prathamā · ekavacana
- 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
निपानम् आहावः
Pāṇini leaves out words that carry over from earlier sūtras. Expand to see the rule as a reader actually understands it.
Commentary
The word आहाव is irregularly formed when meaning 'a trough'.
The word आहावः is irregularly formed from ह्वे by the prefix आ, then samprasarana, and the vriddhi of the vowel. Thus आ + ह्वे + अप् = आहु + अ = आहौ + अ = आहावः 'a trough near a well for watering cattle'. Otherwise आह्वायः 'calling'. Even in the word आहावः the sense of calling is understood. It is that place near a well, containing water, where cattle are called or invited to drink water.
Śrīśa Chandra Vasu, The Ashtadhyayi of Panini (1897), via ashtadhyayi.com.