6.4.83
ओः सुपि
Operational rule vidhi
An उवर्ण occurring at end of an a असंयोगपूर्व धातु which in turn occurs at end of an अनेकाच् अङ्ग is converted to यण् letter when followed by a सुप् अजादिप्रत्यय.
Word by word (padaccheda)
Target ओः ṣaṣṭhī · ekavacanaRight context saptamī · ekavacana
- Target Ṣaṣṭhī (6th case): names what gets replaced, "in place of X" (1.1.49 षष्ठी स्थानेयोगा).
- 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, dashed ones pratyāhāras (names for classes of sounds or affixes). Hover or tap one to see its card.
Full reading
ओः
Pāṇini leaves out words that carry over from earlier sūtras. Expand to see the rule as a reader actually understands it.
Commentary
When a case-affix beginning with a vowel follows, then the semi-vowel व् is substituted for the final ऊ of a अङ्ग (stem) containing more than one syllable if the अङ्ग (stem) ends with a verbal root ending in ऊ not preceded by a conjunct consonant forming part of the root.
As no roots at the end of a stem end in short उ, the latter is not mentioned in the translation. Thus खलपू 'a sweeper':- dual खलप्वौ, plural खलप्वः; so also शतस्वौ and शतस्वः, and सकृल्लू : dual सकृल्ल्वौ and सकृल्ल्वः ॥ But लुलुवतुः and लुलुवः before tense-affixes, (non-सुप्); लू - लुवौ, लुवः (because consisting of one syllable only), and कटप्रू - कटप्रुवौ, कटप्रुवः (because ऊ is preceded by a conjunct consonant forming part of the root). The rule does not apply if the first member is not a Gati or a Karaka word: as परमलूः- परमलुवौ and परमलुवः ॥
Śrīśa Chandra Vasu, The Ashtadhyayi of Panini (1897), via ashtadhyayi.com.