Declension table of ?vadhna

Masculine	Singular	Dual	Plural
Nominative	vadhnaḥ	vadhnau	vadhnāḥ
Vocative	vadhna	vadhnau	vadhnāḥ
Accusative	vadhnam	vadhnau	vadhnān
Instrumental	vadhnena	vadhnābhyām	vadhnaiḥ vadhnebhiḥ
Dative	vadhnāya	vadhnābhyām	vadhnebhyaḥ
Ablative	vadhnāt	vadhnābhyām	vadhnebhyaḥ
Genitive	vadhnasya	vadhnayoḥ	vadhnānām
Locative	vadhne	vadhnayoḥ	vadhneṣu

Compound vadhna -

Adverb -vadhnam -vadhnāt