Declension table of ?pitṛdāya

Masculine	Singular	Dual	Plural
Nominative	pitṛdāyaḥ	pitṛdāyau	pitṛdāyāḥ
Vocative	pitṛdāya	pitṛdāyau	pitṛdāyāḥ
Accusative	pitṛdāyam	pitṛdāyau	pitṛdāyān
Instrumental	pitṛdāyena	pitṛdāyābhyām	pitṛdāyaiḥ pitṛdāyebhiḥ
Dative	pitṛdāyāya	pitṛdāyābhyām	pitṛdāyebhyaḥ
Ablative	pitṛdāyāt	pitṛdāyābhyām	pitṛdāyebhyaḥ
Genitive	pitṛdāyasya	pitṛdāyayoḥ	pitṛdāyānām
Locative	pitṛdāye	pitṛdāyayoḥ	pitṛdāyeṣu

Compound pitṛdāya -

Adverb -pitṛdāyam -pitṛdāyāt