Pāṇini sūtras

The Vṛiddhi is the single substitute when the a or ā of a preposition (upasarga) is followed by the short ṛ of a verb.

German Auch für a oder ā einer Präposition + ṛ eines Verbums. (91)

1. upasargātउपसर्गात्

   Part	Lexeme	Sandhi form	Meaning	Stem + termination
   uउ	upasargaउपसर्ग	upasargātउपसर्गात्	preposition	upasargउपसर्ग् + plus ātआत्

2. ṛ+tiऋ+ति

   Part	Lexeme	Sandhi form	Meaning	Stem + termination
   ṛऋ	ṛऋ	ṛऋ	ṛkāraऋकार	ṛऋ
   tत्	tत्	tiति	TT	tत् + plus iइ

3. dhātauधातौ

   Part	Lexeme	Sandhi form	Meaning	Stem + termination
   dद्	dhātuधातु	dhātauधातौ	Sanskrit verbal root	dhātधात् + plus auऔ

Anuvṛtti

1. saṃhitāyāmसंहितायाम् 6·1·72

   Part	Lexeme	Sandhi form	Meaning	Stem + termination
   sस्	saṃhitāसंहिता	saṃhitāyāmसंहितायाम्	continuous speech	saṃhitसंहित् + plus āyआय्

2. ya+ṇ+a+ciय+ण्+अ+चि 6·1·77

   Part	Lexeme	Sandhi form	Meaning	Stem + termination
   aअ	aअ	aअ	akāraअकार	aअ
   cच्	cच्	ciचि	CC	cच् + plus iइ

3. pūrva+parayoḥपूर्व+परयोः 6·1·84

   Part	Lexeme	Sandhi form	Meaning	Stem + termination
   pप्	pūrvaपूर्व	pūrvaपूर्व	antecedent	pūrvaपूर्व
   pप्	paraपर	parayoḥपरयोः	following	paraपर + plus yoḥयोः

4. ā+tआ+त् 6·1·87

   Part	Lexeme	Sandhi form	Meaning	Stem
   āआ	āआ	āआ	ākāraआकार	āआ
   tत्	tत्	tत्	TT	tत्

5. vṛddhiḥवृद्धिः 6·1·88

   Part	Lexeme	Sandhi form	Meaning	Stem + termination
   vव्	vṛddhiवृद्धि	vṛddhiḥवृद्धिः	vṛddhiवृद्धि	vṛddhवृद्ध् + plus iḥइः