Declension table of ?prayasvat

Masculine	Singular	Dual	Plural
Nominative	prayasvān	prayasvantau	prayasvantaḥ
Vocative	prayasvan	prayasvantau	prayasvantaḥ
Accusative	prayasvantam	prayasvantau	prayasvataḥ
Instrumental	prayasvatā	prayasvadbhyām	prayasvadbhiḥ
Dative	prayasvate	prayasvadbhyām	prayasvadbhyaḥ
Ablative	prayasvataḥ	prayasvadbhyām	prayasvadbhyaḥ
Genitive	prayasvataḥ	prayasvatoḥ	prayasvatām
Locative	prayasvati	prayasvatoḥ	prayasvatsu

Compound prayasvat -

Adverb -prayasvantam