Declension table of ?hṛdayaprastara

Neuter	Singular	Dual	Plural
Nominative	hṛdayaprastaram	hṛdayaprastare	hṛdayaprastarāṇi
Vocative	hṛdayaprastara	hṛdayaprastare	hṛdayaprastarāṇi
Accusative	hṛdayaprastaram	hṛdayaprastare	hṛdayaprastarāṇi
Instrumental	hṛdayaprastareṇa	hṛdayaprastarābhyām	hṛdayaprastaraiḥ
Dative	hṛdayaprastarāya	hṛdayaprastarābhyām	hṛdayaprastarebhyaḥ
Ablative	hṛdayaprastarāt	hṛdayaprastarābhyām	hṛdayaprastarebhyaḥ
Genitive	hṛdayaprastarasya	hṛdayaprastarayoḥ	hṛdayaprastarāṇām
Locative	hṛdayaprastare	hṛdayaprastarayoḥ	hṛdayaprastareṣu

Compound hṛdayaprastara -

Adverb -hṛdayaprastaram -hṛdayaprastarāt