7.1.13
ङेर्यः
Operational rule vidhi
The ङे प्रत्यय attached to an अदन्त अङ्ग is converted to a यकार.
Word by word (padaccheda)
Target ङेः ṣaṣṭhī · ekavacanaSubstitute / term यः 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
ङेः यः
Pāṇini leaves out words that carry over from earlier sūtras. Expand to see the rule as a reader actually understands it.
ङेः → यः
Replace ṅeḥ with yaḥ. Inherited words (anuvṛtti) may add further conditions.
Commentary
After a अङ्ग (stem) ending in अ are substituted there is substituted य for the Dative -4th Case ending ए।
Thus वृक्षाय, प्लक्षाय, the अ is lengthended by 7.3.102, in spite of the maxim संनिपातलक्षणो विधि रनिमित्तम् तद्विधातस्य ॥ "That which is taught in a rule the application of which is occasioned by the combination of two things, does not become the cause of the destruction of that combination". Thus य is substituted here, because the preceding word ends in a short अ, thus this short अ occasioned the existence of य, therefore this य cannot occasion the destruction of अ ॥ But that however it does, for it is on account of this य, that the preceding अ is replaced by आ ॥
The ङेः is the anomalous genitive case of the Dative ending ङे; this affix is exhibited without any vibhakti in 7.1.28. The ङेः should not be taken as the Genitive singular of ङि the affix of the Locative singular.
Śrīśa Chandra Vasu, The Ashtadhyayi of Panini (1897), via ashtadhyayi.com.