Pāṇini sūtras

The u or ū of a bha stem is elided before the affix eya (ḍha), but not of the stem ‘Kaṭrû’.

German Vor dem Suffix eya fallen u und ū ab, jedoch nicht bei kadrū. (147)

1. ḍheढे

   Part	Lexeme	Sandhi form	Meaning	Stem + termination
   ḍड्	ḍhaढ	ḍheढे	ḍhaढ	ḍhढ् + plus eए

2. lopaḥलोपः

   Part	Lexeme	Sandhi form	Meaning	Stem + termination
   lल्	lopaलोप	lopaḥलोपः	suffix elision	lopलोप् + plus aḥअः

3. a+kadrvāḥअ+कद्र्वाः

   Part	Lexeme	Sandhi form	Meaning	Stem + termination
   aअ	aअ	aअ	not	aअ
   kक्	kadruकद्रु	kadrvāḥकद्र्वाः	kadrū [word]कद्रू [wओर्द्]	kadrकद्र् + plus vāवा

Anuvṛtti

1. bhātभात् 6·4·22

   Part	Lexeme	Sandhi form	Meaning	Stem + termination
   bब्	bhaभ	bhātभात्	bhaभ	bhभ् + plus ātआत्

2. bhasyaभस्य 6·4·129

   Part	Lexeme	Sandhi form	Meaning	Stem + termination
   bब्	bhaभ	bhasyaभस्य	bhaभ	bhभ् + plus asyaअस्य

3. taddhiteतद्धिते 6·4·144

   Part	Lexeme	Sandhi form	Meaning	Stem + termination
   tत्	taddhitaतद्धित	taddhiteतद्धिते	taddhitaतद्धित	taddhitतद्धित् + plus eए

4. oḥओः 6·4·146

   Part	Lexeme	Sandhi form	Meaning	Stem + termination
   oओ	uउ	oḥओः	ukāraउकार	uउ + plus ḥः