Pāṇini sūtras

The affixes ‘ktvâ’ and ‘ṇamul’ are added to the root ‘bhû’, when the word ‘tûshṇûm’ (silently) is in composition.

1. tūṣṇīmiतूष्णीमि

   Part	Lexeme	Sandhi form	Meaning	Stem + termination
   tत्	tūṣṇतूष्ण्	tūṣṇīmiतूष्णीमि	tūṣṇīm [word]तूष्णीम् [wओर्द्]	tūṣṇīmतूष्णीम् + plus iइ

2. bhuvaḥभुवः

   Part	Lexeme	Sandhi form	Meaning	Stem + termination
   bब्	bhūभू	bhuvaḥभुवः	bhūभू	bhभ् + plus uvaḥउवः

Anuvṛtti

1. ktvā+ṇamulauक्त्वा+णमुलौ 3·4·59

   Part	Lexeme	Sandhi form	Meaning	Stem + termination
   kक्	ktvāक्त्वा	ktvāक्त्वा	ktvāक्त्वा	ktvāक्त्वा
   ṇण्	ṇamulणमुल्	ṇamulauणमुलौ	ṇamulणमुल्	ṇamulणमुल् + plus auऔ