Pāṇini sūtras

The substution of ā for the diphthong takes place in the causatives of the roots krī ‘to by’, i ‘to study’ and ji ‘to conquer.’

German In krī, i “studiren” und ji findet im Causativum diese Substitution statt. (48)

1. krī+iṅ+jīnāmक्री+इङ्+जीनाम्

   Part	Lexeme	Sandhi form	Meaning	Stem + termination
   kक्	krīक्री	krīक्री	krīक्री	krक्र् + plus īई
   iइ	iṅइङ्	iṅइङ्	iइ	iṅइङ्
   jज्	jiजि	jīnāmजीनाम्	jiजि	jज् + plus īnईन्

2. ṇauणौ

   Part	Lexeme	Sandhi form	Meaning	Stem + termination
   ṇण्	ṇiणि	ṇauणौ	causative	ṇण् + plus auऔ

Anuvṛtti

1. upadeśeउपदेशे 6·1·45

   Part	Lexeme	Sandhi form	Meaning	Stem + termination
   uउ	upadeśaउपदेश	upadeśeउपदेशे	linguistics	upadeśउपदेश् + plus eए