Pāṇini sūtras

ṣ is substituted, before a hard guttural or a labial, for the visarga which is preceded by i or u, and is not part of an affix.

German Gehört der Visarjanīya nicht zu einem Suffix, und geht ihm ein i oder u voran, so tritt vor einem tonlosen Guttural oder Labial (s. 8,3, 37) ṣ an seine Stelle. (41)

1. i+t+u+t+upadhasyaइ+त्+उ+त्+उपधस्य

   Part	Lexeme	Sandhi form	Meaning	Stem + termination
   iइ	iइ	iइ	ikāraइकार	iइ
   tत्	tत्	tत्	TT	tत्
   uउ	uउ	uउ	ukāraउकार	uउ
   tत्	tत्	tत्	TT	tत्
   uउ	upadhāउपधा	upadhasyaउपधस्य	penult	upadhउपध् + plus asyaअस्य

2. caच

   Part	Lexeme	Sandhi form	Meaning	Stem
   cच्	caच	caच	besides	caच

3. a+pratyayasyaअ+प्रत्ययस्य

   Part	Lexeme	Sandhi form	Meaning	Stem + termination
   aअ	aअ	aअ	not	aअ
   pप्	pratyayaप्रत्यय	pratyayasyaप्रत्ययस्य	affix	pratyayप्रत्यय् + plus asyaअस्य

Anuvṛtti

1. visarjanīyasyaविसर्जनीयस्य 8·3·34

   Part	Lexeme	Sandhi form	Meaning	Stem + termination
   vव्	visarjanīyaविसर्जनीय	visarjanīyasyaविसर्जनीयस्य	visarga	visarjanīyविसर्जनीय् + plus asyaअस्य

2. ku+pvoḥकु+प्वोः 8·3·37

   Part	Lexeme	Sandhi form	Meaning	Stem + termination
   kक्	kuकु	kuकु	guttural	kक् + plus uउ
   pप्	puपु	pvoḥप्वोः	labial consonant	pप् + plus voḥवोः

3. saḥसः 8·3·38

   Part	Lexeme	Sandhi form	Meaning	Stem + termination
   sस्	saस	saḥसः	sakāraसकार	sस् + plus aḥअः

4. i+ṇaḥइ+णः 8·3·39

   Part	Lexeme	Sandhi form	Meaning	Stem + termination
   ṇण्	ṇण्	ṇaḥणः	NaNअ	ṇण् + plus aḥअः