Pāṇini sūtras

There is the substitution of u for the a of as of the Ablative and Genitive singular, after sakhi and pati, when for the i of those two stems y is substituted.

German Nach sakhi und pati wird für das a der beiden genannten Casusendungen u substituirt, wenn für das i der beiden Stämme y eintritt. (112)

1. khya+tyātख्य+त्यात्

   Part	Lexeme	Sandhi form	Meaning	Stem + termination
   kक्	khyaख्य	khyaख्य	khyaख्य	khyख्य् + plus aअ
   tत्	tyaत्य	tyātत्यात्	tyaत्य	tyत्य् + plus ātआत्

2. parasyaपरस्य

   Part	Lexeme	Sandhi form	Meaning	Stem + termination
   pप्	paraपर	parasyaपरस्य	following	paraपर + plus syaस्य

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. e+ṅaḥए+ङः 6·1·109

   Part	Lexeme	Sandhi form	Meaning	Stem + termination
   eए	eए	eए	ekāraएकार	eए
   ṅङ्	ṅङ्	ṅaḥङः	NaNअ	ṅङ् + plus aḥअः

4. ṅasi+ṅasoḥङसि+ङसोः 6·1·110

   Part	Lexeme	Sandhi form	Meaning	Stem + termination
   ṅङ्	ṅasiङसि	ṅasiङसि	ṅasiङसि	ṅasङस् + plus iइ
   ṅङ्	ṅasङस्	ṅasoḥङसोः	ṅasङस्	ṅasङस् + plus oḥओः

5. u+tउ+त् 6·1·111

   Part	Lexeme	Sandhi form	Meaning	Stem
   uउ	uउ	uउ	ukāraउकार	uउ
   tत्	tत्	tत्	TT	tत्