4.1.36
पूतक्रतोरै च
Operational rule vidhi
In forming the feminine, the letter ऐ is the substitute of the final word पूतक्तु when the affix ङीप् is added.
Word by word (padaccheda)
Target पूतक्रतोः ṣaṣṭhī · ekavacanaWord ऐ Indeclinable च avyaya
- Target Ṣaṣṭhī (6th case): names what gets replaced, "in place of X" (1.1.49 षष्ठी स्थानेयोगा).
- 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
पूतक्रतोः ऐ च
Pāṇini leaves out words that carry over from earlier sūtras. Expand to see the rule as a reader actually understands it.
Commentary
In forming the feminine, the letter ऐ is the substitute of the final word पूतक्तु when the affix ङीप् is added.
Thus पूतक्रतायी 'the wife of Putakratu'. This and the two succeeding sutras, are in a way more intimately connected with 4.1.48, in as much as the sense of the feminine words must be that of 'wife of', otherwise these sutras will not apply. Thus if the meaning is not that of 'wife of', the word पूतक्रतुः will be both masculine and feminine as well, meaning 'she by whom sacrifices (क्रतवः) are sanctified (पूताः)'.
Śrīśa Chandra Vasu, The Ashtadhyayi of Panini (1897), via ashtadhyayi.com.