8.3.96
विकुशमिपरिभ्यः स्थलम्
Operational rule vidhi
ष् is substituted for the स् of स्थल after वि , कु , शमि and परि.
Word by word (padaccheda)
Left context वि- कु- शमि- परिभ्यः pañcamī · bahuvacanaSubstitute / term स्थलम् 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.
Full reading
वि-
Pāṇini leaves out words that carry over from earlier sūtras. Expand to see the rule as a reader actually understands it.
Commentary
ष् is substituted for the स् of स्थल after वि , कु , शमि and परि।
Thus विष्ठलम्, कुष्ठलम्, शमिष्ठलम् and परिष्टलम् ॥ The word वि, कु and परि are compounded under 2.2.18; the word शमी forms a genitive by 6.3.63. In the aphorism the word शमि is shown with a short इ, indicating thereby that when the इ is not shortened, the cerebral change does not take place; as शमीस्थलम्
Śrīśa Chandra Vasu, The Ashtadhyayi of Panini (1897), via ashtadhyayi.com.