Declension table of ?vidāya

Masculine	Singular	Dual	Plural
Nominative	vidāyaḥ	vidāyau	vidāyāḥ
Vocative	vidāya	vidāyau	vidāyāḥ
Accusative	vidāyam	vidāyau	vidāyān
Instrumental	vidāyena	vidāyābhyām	vidāyaiḥ vidāyebhiḥ
Dative	vidāyāya	vidāyābhyām	vidāyebhyaḥ
Ablative	vidāyāt	vidāyābhyām	vidāyebhyaḥ
Genitive	vidāyasya	vidāyayoḥ	vidāyānām
Locative	vidāye	vidāyayoḥ	vidāyeṣu

Compound vidāya -

Adverb -vidāyam -vidāyāt