Declension table of ?vidmana

Masculine	Singular	Dual	Plural
Nominative	vidmanaḥ	vidmanau	vidmanāḥ
Vocative	vidmana	vidmanau	vidmanāḥ
Accusative	vidmanam	vidmanau	vidmanān
Instrumental	vidmanena	vidmanābhyām	vidmanaiḥ vidmanebhiḥ
Dative	vidmanāya	vidmanābhyām	vidmanebhyaḥ
Ablative	vidmanāt	vidmanābhyām	vidmanebhyaḥ
Genitive	vidmanasya	vidmanayoḥ	vidmanānām
Locative	vidmane	vidmanayoḥ	vidmaneṣu

Compound vidmana -

Adverb -vidmanam -vidmanāt