Pāṇini sūtras

In a Bahuvrûhi compound, a Participle in kta preceded by a preposition, standing as the first member of the compound, has optionally acute on the last syllable.

1. niṣṭhā+upasarga+pūrvamनिष्ठा+उपसर्ग+पूर्वम्

   Part	Lexeme	Sandhi form	Meaning	Stem + termination
   nन्	niṣṭhनिष्ठ्	niṣṭhāनिष्ठा	niṣṭhāनिष्ठा	niṣṭhनिष्ठ् + plus āआ
   uउ	upasargaउपसर्ग	upasargaउपसर्ग	preposition	upasargउपसर्ग् + plus aअ
   pप्	pūrvaपूर्व	pūrvamपूर्वम्	antecedent	pūrvaपूर्व + plus mम्

2. anyatarasyāmअन्यतरस्याम्

   Part	Lexeme	Sandhi form	Meaning	Stem + termination
   aअ	anyataraअन्यतर	anyatarasyāmअन्यतरस्याम्	optional	anyataraअन्यतर + plus syāmस्याम्

Anuvṛtti

1. udāttaḥउदात्तः 6·2·64

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

2. antaḥअन्तः 6·2·92

   Part	Lexeme	Sandhi form	Meaning	Stem + termination
   aअ	antaअन्त	antaḥअन्तः	last syllable	antअन्त् + plus aḥअः

3. bahuvrīhauबहुव्रीहौ 6·2·106

   Part	Lexeme	Sandhi form	Meaning	Stem + termination
   bब्	bahuvrīhiबहुव्रीहि	bahuvrīhauबहुव्रीहौ	bahuvrīhiबहुव्रीहि	bahuvrīhबहुव्रीह् + plus auऔ