2.3.9
यस्मादधिकं यस्य चेश्वरवचनं तत्र सप्तमी
Operational rule vidhi
Where a word is governed by a कर्मप्रवचनीयाः (1.4.83) in the sense of 'more than' उपोऽधिके च (1.4.87) or 'lord of' अधिरीश्वरे (1.4.97) there the 7th case-affix (locative) is used.
Word by word (padaccheda)
Left context यस्मात् pañcamī · ekavacanaSubstitute / term अधिकम् prathamā · ekavacanaTarget यस्य ṣaṣṭhī · ekavacanaIndeclinable च avyayaSubstitute / term ईश्वरवचनम् prathamā · ekavacanaIndeclinable तत्र avyayaSubstitute / term सप्तमी prathamā · ekavacana
- Left context Pañcamī (5th case): "after X", the operation applies to what follows (1.1.67 तस्मादित्युत्तरस्य). Also used for limits and sources.
- Substitute / term Prathamā (1st case): in operational rules, the substitute or the thing introduced; in definitions, the term or its referent.
- Target Ṣaṣṭhī (6th case): names what gets replaced, "in place of X" (1.1.49 षष्ठी स्थानेयोगा).
- Indeclinable An avyaya such as च "and", वा "optionally", न "not".
Full reading
यस्मात् अधिकम् यस्य च ईश्वरवचनम् तत्र सप्तमी
Pāṇini leaves out words that carry over from earlier sūtras. Expand to see the rule as a reader actually understands it.
यस्य → अधिकम् ईश्वरवचनम् सप्तमी / यस्मात्
Replace yasya with adhikam īśvaravacanam saptamī when it comes after yasmāt. Inherited words (anuvṛtti) may add further conditions.
Commentary
Where a word is governed by a कर्मप्रवचनीयाः 1.4.83 in the sense of 'more than' उपोऽधिके च 1.4.87 or 'lord of' अधिरीश्वरे 1.4.97 there the 7th case-affix (locative) is used.
Ex. उपखार्याम् द्रोणः 'A Drona is more than a Khari,' अधिब्रह्मदत्ते पंचालाः 'Brahmadatta is the lord of Panchalas.' The phrase यस्यचेश्वरवचनं indicate that both the thing owned and the owner may be in the locative. See (1.4.97).
This aphorism debars the accusative.
Śrīśa Chandra Vasu, The Ashtadhyayi of Panini (1897), via ashtadhyayi.com.