6.1.38
लिटि वयो यः
Operational rule vidhi
In the substituted root वय (2.4.41), the य in the Perfect is not vocalised.
Word by word (padaccheda)
Right context लिटि saptamī · ekavacanaTarget वयः ṣaṣṭhī · ekavacanaTarget यः ṣaṣṭhī · ekavacana
- Right context Saptamī (7th case): "when X follows", the operation applies to what precedes (1.1.66 तस्मिन्निति निर्दिष्टे पूर्वस्य). Also a condition or domain ("in the sense of").
- Target Ṣaṣṭhī (6th case): names what gets replaced, "in place of X" (1.1.49 षष्ठी स्थानेयोगा).
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Full reading
लिटि वयः यः
Pāṇini leaves out words that carry over from earlier sūtras. Expand to see the rule as a reader actually understands it.
Commentary
In the substituted root वय 2.4.41, the य in the Perfect is not vocalised.
The phrase न संप्रसारणं is understood here. Thus उवाय, ऊयतुः, ऊयुः ॥ The word लिट् is employed in this aphorism for the sake of subsequent sutras, this one could have done well without it even.
Śrīśa Chandra Vasu, The Ashtadhyayi of Panini (1897), via ashtadhyayi.com.