5.3.19
तदो दा च
Operational rule vidhi
After तद् ending in the Locative -7th case when time is denoted, comes the affixes दा and दानीम्
Word by word (padaccheda)
Left context तदः pañcamī · ekavacanaSubstitute / term दा prathamā · ekavacanaIndeclinable च avyaya
- Left context Pañcamī (5th case): "after X", the operation applies to what follows (1.1.67 तस्मादित्युत्तरस्य). Also used for limits and sources.
- Substitute / term Prathamā (1st case): in operational rules, the substitute or the thing introduced; in definitions, the term or its referent.
- Indeclinable An avyaya such as च "and", वा "optionally", न "not".
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Full reading
तदः दा च
Pāṇini leaves out words that carry over from earlier sūtras. Expand to see the rule as a reader actually understands it.
Commentary
After तद् ending in the Locative -7th case when time is denoted, comes the affixes दा and दानीम्
The दानीम् is read into the sutra by force of the word च 'also'. Thus तस्मिन् काले = तदा or तदानीम् 'at that time'. This sutra, so far as it ordains दा after the word तद् is useless, because the word तद् already takes दा by 5.3.15.
Śrīśa Chandra Vasu, The Ashtadhyayi of Panini (1897), via ashtadhyayi.com.