Pāṇini sūtras

Whatever is derived with an affix having an indicatory ñ or ṅ, has the acute accent invariably on the first syllable.

German Was ein Suffix mit stummem ñ oder n enthält, hat den Acut stets auf der ersten Silbe. (197)

1. ñ+n+itiञ्+न्+इति

   Part	Lexeme	Sandhi form	Meaning	Stem + termination
   ñञ्	ñञ्	ñञ्	ñakāraञकार	ñञ्
   nन्	nन्	nन्	nakāraनकार	nन्
   iइ	itइत्	itiइति	itइत्	itइत् + plus iइ

2. ādiḥआदिः

   Part	Lexeme	Sandhi form	Meaning	Stem + termination
   āआ	ādiआदि	ādiḥआदिः	first syllable	ādआद् + plus iḥइः

3. nityamनित्यम्

   Part	Lexeme	Sandhi form	Meaning	Stem
   nन्	nityamनित्यम्	nityamनित्यम्	always	nityamनित्यम्

Anuvṛtti

1. udāttaḥउदात्तः 6·1·159

   Part	Lexeme	Sandhi form	Meaning	Stem + termination
   uउ	udāttaउदात्त	udāttaḥउदात्तः	udāttaउदात्त	udāttउदात्त् + plus aḥअः