Declension table of hṛd

Neuter	Singular	Dual	Plural
Nominative
Vocative
Accusative			hṛdaḥ
Instrumental	hṛdā	hṛdbhyām	hṛdbhiḥ
Dative	hṛde	hṛdbhyām	hṛdbhyaḥ
Ablative	hṛdaḥ	hṛdbhyām	hṛdbhyaḥ
Genitive	hṛdaḥ	hṛdoḥ	hṛdām
Locative	hṛdi	hṛdoḥ	hṛtsu

Compound hṛt -

Adverb -hṛt