4.4.123
असुरस्य स्वम्
Operational rule vidhi
The affix यत् comes in the sense of 'property' after the word असुर in the Genitive -6th-Case in construction, in the छन्दस् (Vedas).
Word by word (padaccheda)
Target असुरस्य ṣaṣṭhī · ekavacanaSubstitute / term स्वम् prathamā · ekavacana
- Target Ṣaṣṭhī (6th case): names what gets replaced, "in place of X" (1.1.49 षष्ठी स्थानेयोगा).
- Substitute / term Prathamā (1st case): in operational rules, the substitute or the thing introduced; in definitions, the term or its referent.
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Full reading
असुरस्य स्वम्
Pāṇini leaves out words that carry over from earlier sūtras. Expand to see the rule as a reader actually understands it.
असुरस्य → स्वम्
Replace asurasya with svam. Inherited words (anuvṛtti) may add further conditions.
Commentary
The affix यत् comes in the sense of 'property' after the word असुर in the Genitive -6th-Case in construction, in the छन्दस् (Vedas).
This debars अण् ॥ Thus असुर्यम् 'belonging to the Asuras. As असुर्यं वा एतत् पात्रं यच्चक्रधृतं कुलालकृतम् 'this vessel made on a wheel by a potter belongs to the Asuras'. असुर्यं देवेभिर्धायि विश्वम् ॥ See Maitr S. I.8.3
Śrīśa Chandra Vasu, The Ashtadhyayi of Panini (1897), via ashtadhyayi.com.