8.3.68
अवाच्चालम्बनाविदूर्ययोः
Operational rule vidhi
The स् of स्तम्भ् is changed into to ष after the उपसर्ग (Preposition) अव in the sense of 'support' and 'contiguity'.
Word by word (padaccheda)
Left context अवात् pañcamī · ekavacanaIndeclinable च avyayaRight context आलम्बन- आविदूर्ययोः saptamī · dvivacana
- Left context Pañcamī (5th case): "after X", the operation applies to what follows (1.1.67 तस्मादित्युत्तरस्य). Also used for limits and sources.
- Indeclinable An avyaya such as च "and", वा "optionally", न "not".
- 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").
Dotted words are technical terms. Hover or tap one to see its card.
Full reading
अवात् च आलम्बन-
Pāṇini leaves out words that carry over from earlier sūtras. Expand to see the rule as a reader actually understands it.
Commentary
The स् of स्तम्भ् is changed into to ष after the उपसर्ग (Preposition) अव in the sense of 'support' and 'contiguity'.
The word आलम्बनं means "support, refuge, that upon which any thing depends or leans". आविदूर्य means "the state of not being विदूर or far off, i.e. to be contiguous".
Thus अवष्टभ्यास्ते "He remains leaning upon a staff" &c, अवष्टभ्य तिष्ठति ॥ So also in the sense of to be near, as अवष्टब्धा सेना 'the army near at hand'. अवष्टब्धा शरत् ॥ See 5.2.13.
Why do we say "when having the sense of support or contiguity"? Thus अवस्तब्धो वृषलः शीतेन 'the Sudra is afflicted with cold'.
The present sutra is commenced in order to make the ष change even while the preceding letter is not इ or उ ॥
Śrīśa Chandra Vasu, The Ashtadhyayi of Panini (1897), via ashtadhyayi.com.