Declension table of ?pramāṇastha

Neuter	Singular	Dual	Plural
Nominative	pramāṇastham	pramāṇasthe	pramāṇasthāni
Vocative	pramāṇastha	pramāṇasthe	pramāṇasthāni
Accusative	pramāṇastham	pramāṇasthe	pramāṇasthāni
Instrumental	pramāṇasthena	pramāṇasthābhyām	pramāṇasthaiḥ
Dative	pramāṇasthāya	pramāṇasthābhyām	pramāṇasthebhyaḥ
Ablative	pramāṇasthāt	pramāṇasthābhyām	pramāṇasthebhyaḥ
Genitive	pramāṇasthasya	pramāṇasthayoḥ	pramāṇasthānām
Locative	pramāṇasthe	pramāṇasthayoḥ	pramāṇastheṣu

Compound pramāṇastha -

Adverb -pramāṇastham -pramāṇasthāt