Pāṇini sūtras

The affixes ‘tosun’ and ‘kasun’ are added to roots in the Chhandas, to form Infinitives, when the word ‘ûśvara’ is in composition.

1. īśvareईश्वरे

   Part	Lexeme	Sandhi form	Meaning	Stem + termination
   īई	īśvaraईश्वर	īśvareईश्वरे	īśvara [word]ईश्वर [wओर्द्]	īśvarईश्वर् + plus eए

2. tosun+kasunauतोसुन्+कसुनौ

   Part	Lexeme	Sandhi form	Meaning	Stem + termination
   tत्	tosunतोसुन्	tosunतोसुन्	tosunतोसुन्	tosunतोसुन्
   kक्	kasunकसुन्	kasunauकसुनौ	kasunकसुन्	kasunकसुन् + plus auऔ

Anuvṛtti

1. chandasiछन्दसि 3·4·6

   Part	Lexeme	Sandhi form	Meaning	Stem + termination
   cच्	chandasछन्दस्	chandasiछन्दसि	Veda	chandछन्द् + plus asiअसि

2. tum+artheतुम्+अर्थे 3·4·9

   Part	Lexeme	Sandhi form	Meaning	Stem + termination
   tत्	tumतुम्	tumतुम्	tumun	tumतुम्
   aअ	arthaअर्थ	artheअर्थे	sense	arthअर्थ् + plus eए