Declension table of prasthātṛ

Masculine	Singular	Dual	Plural
Nominative	prasthātā	prasthātārau	prasthātāraḥ
Vocative	prasthātaḥ	prasthātārau	prasthātāraḥ
Accusative	prasthātāram	prasthātārau	prasthātṝn
Instrumental	prasthātrā	prasthātṛbhyām	prasthātṛbhiḥ
Dative	prasthātre	prasthātṛbhyām	prasthātṛbhyaḥ
Ablative	prasthātuḥ	prasthātṛbhyām	prasthātṛbhyaḥ
Genitive	prasthātuḥ	prasthātroḥ	prasthātṝṇām
Locative	prasthātari	prasthātroḥ	prasthātṛṣu

Compound prasthātṛ -

Adverb -prasthātṛ