Declension table of ?durhṛdaya

Neuter	Singular	Dual	Plural
Nominative	durhṛdayam	durhṛdaye	durhṛdayāni
Vocative	durhṛdaya	durhṛdaye	durhṛdayāni
Accusative	durhṛdayam	durhṛdaye	durhṛdayāni
Instrumental	durhṛdayena	durhṛdayābhyām	durhṛdayaiḥ
Dative	durhṛdayāya	durhṛdayābhyām	durhṛdayebhyaḥ
Ablative	durhṛdayāt	durhṛdayābhyām	durhṛdayebhyaḥ
Genitive	durhṛdayasya	durhṛdayayoḥ	durhṛdayānām
Locative	durhṛdaye	durhṛdayayoḥ	durhṛdayeṣu

Compound durhṛdaya -

Adverb -durhṛdayam -durhṛdayāt