4.1.156
अणो द्व्यचः
Operational rule vidhi
The affix फिञ् comes in the sense of descendant after a disyllabic word ending in the affix अण्.
Word by word (padaccheda)
Left context अणः pañcamī · ekavacanaLeft context द्व्यचः pañcamī · ekavacana
- 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
अणः द्व्यचः
Pāṇini leaves out words that carry over from earlier sūtras. Expand to see the rule as a reader actually understands it.
Commentary
The affix फिञ् comes in the sense of descendant after a disyllabic word ending in the affix अण्।
This debars इञ् ॥ Thus कार्त्रायणिः 'son of Kartra,' हार्त्रायणिः 'son of a Hartra.'
Why do we say "which ends in the affix अण्"? Observe दाक्षायणः 'son of Dakshi' 4.1.101. Why do we say a 'dissyllabic word'? Observe औपगविः 'son of औपगव' ॥
Vart:- The pronouns 'tyad &c.' optionally take the affix फिञ् or अण् ॥ Thus त्यादायनिः or त्यादः, तादायनिः, or तादः ॥
Śrīśa Chandra Vasu, The Ashtadhyayi of Panini (1897), via ashtadhyayi.com.