Declension table of vayasya

Masculine	Singular	Dual	Plural
Nominative	vayasyaḥ	vayasyau	vayasyāḥ
Vocative	vayasya	vayasyau	vayasyāḥ
Accusative	vayasyam	vayasyau	vayasyān
Instrumental	vayasyena	vayasyābhyām	vayasyaiḥ vayasyebhiḥ
Dative	vayasyāya	vayasyābhyām	vayasyebhyaḥ
Ablative	vayasyāt	vayasyābhyām	vayasyebhyaḥ
Genitive	vayasyasya	vayasyayoḥ	vayasyānām
Locative	vayasye	vayasyayoḥ	vayasyeṣu

Compound vayasya -

Adverb -vayasyam -vayasyāt