Pāṇini sūtras

The affix shach comes after the words sakthi and akshi, final in a Bahuvrûhi compound and denoting a portion of one’s body.

1. bahuvrīhauबहुव्रीहौ

   Part	Lexeme	Sandhi form	Meaning	Stem + termination
   bब्	bahuvrīhiबहुव्रीहि	bahuvrīhauबहुव्रीहौ	bahuvrīhiबहुव्रीहि	bahuvrīhबहुव्रीह् + plus auऔ

2. sakthi+akṣṇoḥसक्थि+अक्ष्णोः

   Part	Lexeme	Sandhi form	Meaning	Stem + termination
   sस्	sakthiसक्थि	sakthiसक्थि	sakthi [word]	sakthसक्थ् + plus iइ
   aअ	akṣiअक्षि	akṣṇoḥअक्ष्णोः	akṣi [word]अक्षि [wओर्द्]	akṣअक्ष् + plus ṇo&#णो&#

3. sva+aṅgātस्व+अङ्गात्

   Part	Lexeme	Sandhi form	Meaning	Stem + termination
   sस्	svaस्व	svaस्व	own(a)	svस्व् + plus aअ
   aअ	aṅgaअङ्ग	aṅgātअङ्गात्	body part	aṅgअङ्ग् + plus ātआत्

4. ṣacषच्

   Part	Lexeme	Sandhi form	Meaning	Stem
   ṣष्	ṣacषच्	ṣacषच्	ṣacषच्	ṣacषच्

Anuvṛtti

1. samāsa+antāḥसमास+अन्ताः 5·4·68

   Part	Lexeme	Sandhi form	Meaning	Stem + termination
   sस्	samāsaसमास	samāsaसमास	Sanskrit compound	samāsसमास् + plus aअ
   aअ	antaअन्त	antāḥअन्ताः	end	antअन्त् + plus āMआM