Declension table of ?sahasāvat

Masculine	Singular	Dual	Plural
Nominative	sahasāvān	sahasāvantau	sahasāvantaḥ
Vocative	sahasāvan	sahasāvantau	sahasāvantaḥ
Accusative	sahasāvantam	sahasāvantau	sahasāvataḥ
Instrumental	sahasāvatā	sahasāvadbhyām	sahasāvadbhiḥ
Dative	sahasāvate	sahasāvadbhyām	sahasāvadbhyaḥ
Ablative	sahasāvataḥ	sahasāvadbhyām	sahasāvadbhyaḥ
Genitive	sahasāvataḥ	sahasāvatoḥ	sahasāvatām
Locative	sahasāvati	sahasāvatoḥ	sahasāvatsu

Compound sahasāvat -

Adverb -sahasāvantam