8.3.34
विसर्जनीयस्य सः
Operational rule vidhi
A विसर्ग occurring at end of a पद is converted to a सकार when followed by a letter from the खर् प्रत्याहार.
Word by word (padaccheda)
Target विसर्जनीयस्य ṣaṣṭhī · ekavacanaSubstitute / term सः prathamā · ekavacana
- Target Ṣaṣṭhī (6th case): names what gets replaced, "in place of X" (1.1.49 षष्ठी स्थानेयोगा).
- Substitute / term Prathamā (1st case): in operational rules, the substitute or the thing introduced; in definitions, the term or its referent.
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
विसर्जनीयस्य सः
Pāṇini leaves out words that carry over from earlier sūtras. Expand to see the rule as a reader actually understands it.
विसर्जनीयस्य → सः
Replace visarjanīyasya with saḥ. Inherited words (anuvṛtti) may add further conditions.
Commentary
स् is the substitute of a विसर्ग when it is followed by a hard consonant (खर्) which itself is followed by a sibilant (शर्).
The word खरि is understood here. Thus वृक्षश्छादयति, प्लक्षश्छादयति, वृक्षष्ठकारः, प्लक्षष्ठकारः, वृक्षस्थकारः, प्लक्षस्थकारः, वृक्षश्चिनोति, प्लक्षश्चिनोति, वृक्षष्टीकते, प्लक्षष्टीकते, वृक्षस्तरति, प्लक्षस्तरति ॥
By 8.3.15, the र् was changed to visarga before a hard consonant, or at the end of a Pause. In the present sutra, no special cause being mentioned, the स् change would take place, not only before a hard consonant, but at the Pause also, i.e. in वृक्षः, प्लक्षः also. This however, is not the case, because the word संहितायाम् governs this sutra; so the स् change will be in Sanhita only, and not in Pause, moreover we read the anuvritti of खरि here and so prevent the स् change in Pause.
Śrīśa Chandra Vasu, The Ashtadhyayi of Panini (1897), via ashtadhyayi.com.