1.2.22
पूङः क्त्वा च
Extension atideśa अकित्त्वातिदेशः
The सेट् निष्ठा affix and the सेट् क्त्वा are not कित् after the verb पुङ् 'to purify'.
Word by word (padaccheda)
Left context पूङः pañcamī · ekavacanaWord क्त्वा Indeclinable 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.
- Word Case not marked in the source data.
- Indeclinable An avyaya such as च "and", वा "optionally", न "not".
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Full reading
पूङः क्त्वा च
Pāṇini leaves out words that carry over from earlier sūtras. Expand to see the rule as a reader actually understands it.
Commentary
The सेट् निष्ठा affix and the सेट् क्त्वा are not कित् after the verb पुङ् 'to purify'.
The word 'optionally' of the previous sutra 1.2.21 does not govern this sutra, because the word 'optionally' has been again used in the next sutra 1.2.23; of which there would have been no necessity had the word 'optionally' governing force in this sutra, for then this would have also governed the next sutra. The anuvritti of न सेट् however is to be read in this sutra.
By rule 7.2.51, after the verb पू the affixes Nishtha and क्त्वा ktva take the intermediate इ. So that क्त्वा ktva being set (by virtue of Rule 7.2.51) would have been non-kit by Rule 18; and it might be asked what is the necessity of repeating it in this sutra, when sutra 1.2.18 comprised the case. The reason of this repetition is that by mentioning क्त्वा ktva in this sutra, it has governing force over the succeeding sutras. As पवितः, पवितवान्.
Śrīśa Chandra Vasu, The Ashtadhyayi of Panini (1897), via ashtadhyayi.com.