Pāṇini sūtras

The ṣ substitution does not take place in the affix sāt and for that sa which stands at the beginning of a word.

German Auch im Suffix sāt und wenn das s am Anfange eines Wortes steht. (111)

1. sāt+pada+ādyoḥसात्+पद+आद्योः

   Part	Lexeme	Sandhi form	Meaning	Stem + termination
   sस्	sātसात्	sātसात्	sāt [affix]सात् [अffइx]	sātसात्
   pप्	padaपद	padaपद	word	padपद् + plus aअ
   āआ	ādiआदि	ādyoḥआद्योः	first syllable	ādआद् + plus yoḥयोः

Anuvṛtti

1. a+pada+antasyaअ+पद+अन्तस्य 8·3·55

   Part	Lexeme	Sandhi form	Meaning	Stem + termination
   aअ	aअ	aअ	not	aअ
   pप्	padaपद	padaपद	word	padपद् + plus aअ
   aअ	antaअन्त	antasyaअन्तस्य	last syllable	antअन्त् + plus asyaअस्य

2. i+ṇ+koḥइ+ण्+कोः 8·3·57

   Part	Lexeme	Sandhi form	Meaning	Stem + termination
   iइ	iइ	iइ	ikāraइकार	iइ
   ṇण्	ṇण्	ṇण्	NaNअ	ṇण्
   kक्	kuकु	koḥकोः	guttural	kक् + plus oḥओः

3. naन 8·3·110

   Part	Lexeme	Sandhi form	Meaning	Stem
   nन्	naन	naन	not	naन

4. saḥसः 8·3·56

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