Declension table of ?hṛdayavat

Masculine	Singular	Dual	Plural
Nominative	hṛdayavān	hṛdayavantau	hṛdayavantaḥ
Vocative	hṛdayavan	hṛdayavantau	hṛdayavantaḥ
Accusative	hṛdayavantam	hṛdayavantau	hṛdayavataḥ
Instrumental	hṛdayavatā	hṛdayavadbhyām	hṛdayavadbhiḥ
Dative	hṛdayavate	hṛdayavadbhyām	hṛdayavadbhyaḥ
Ablative	hṛdayavataḥ	hṛdayavadbhyām	hṛdayavadbhyaḥ
Genitive	hṛdayavataḥ	hṛdayavatoḥ	hṛdayavatām
Locative	hṛdayavati	hṛdayavatoḥ	hṛdayavatsu

Compound hṛdayavat -

Adverb -hṛdayavantam