5.3.26
था हेतौ च च्छन्दसि
Operational rule vidhi
The affix था comes in the sense of 'cause' after the word किम् in the छन्दस् (Vedas).
Word by word (padaccheda)
Substitute / term था prathamā · ekavacanaRight context हेतौ saptamī · ekavacanaIndeclinable च avyayaRight context छन्दसि saptamī · ekavacana
- Substitute / term Prathamā (1st case): in operational rules, the substitute or the thing introduced; in definitions, the term or its referent.
- 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").
- Indeclinable An avyaya such as च "and", वा "optionally", न "not".
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Full reading
था हेतौ च छन्दसि
Pāṇini leaves out words that carry over from earlier sūtras. Expand to see the rule as a reader actually understands it.
Commentary
The affix था comes in the sense of 'cause' after the word किम् in the छन्दस् (Vedas).
The word प्रकार वचने is read into the sutra by force of च ॥ Thus कथा 'wherefore? why? for what reason?', कथा 'how'. The former is an example of हेतु 'reason or cause', the second of प्रकार 'manner'. As in the following sentences : कथा ग्रामं न पृच्छसि = केन हेतुना ग्रामं न पृच्छसि ॥ कथा देवा आसन् पुराविदः ॥
Here end the affixes having the designation of Vibhakti.
Śrīśa Chandra Vasu, The Ashtadhyayi of Panini (1897), via ashtadhyayi.com.