Declension table of ?pramāṇavat

Masculine	Singular	Dual	Plural
Nominative	pramāṇavān	pramāṇavantau	pramāṇavantaḥ
Vocative	pramāṇavan	pramāṇavantau	pramāṇavantaḥ
Accusative	pramāṇavantam	pramāṇavantau	pramāṇavataḥ
Instrumental	pramāṇavatā	pramāṇavadbhyām	pramāṇavadbhiḥ
Dative	pramāṇavate	pramāṇavadbhyām	pramāṇavadbhyaḥ
Ablative	pramāṇavataḥ	pramāṇavadbhyām	pramāṇavadbhyaḥ
Genitive	pramāṇavataḥ	pramāṇavatoḥ	pramāṇavatām
Locative	pramāṇavati	pramāṇavatoḥ	pramāṇavatsu

Compound pramāṇavat -

Adverb -pramāṇavantam