Declension table of ?hṛdayaprastara

Masculine	Singular	Dual	Plural
Nominative	hṛdayaprastaraḥ	hṛdayaprastarau	hṛdayaprastarāḥ
Vocative	hṛdayaprastara	hṛdayaprastarau	hṛdayaprastarāḥ
Accusative	hṛdayaprastaram	hṛdayaprastarau	hṛdayaprastarān
Instrumental	hṛdayaprastareṇa	hṛdayaprastarābhyām	hṛdayaprastaraiḥ hṛdayaprastarebhiḥ
Dative	hṛdayaprastarāya	hṛdayaprastarābhyām	hṛdayaprastarebhyaḥ
Ablative	hṛdayaprastarāt	hṛdayaprastarābhyām	hṛdayaprastarebhyaḥ
Genitive	hṛdayaprastarasya	hṛdayaprastarayoḥ	hṛdayaprastarāṇām
Locative	hṛdayaprastare	hṛdayaprastarayoḥ	hṛdayaprastareṣu

Compound hṛdayaprastara -

Adverb -hṛdayaprastaram -hṛdayaprastarāt