Declension table of ?nidhvāna

Masculine	Singular	Dual	Plural
Nominative	nidhvānaḥ	nidhvānau	nidhvānāḥ
Vocative	nidhvāna	nidhvānau	nidhvānāḥ
Accusative	nidhvānam	nidhvānau	nidhvānān
Instrumental	nidhvānena	nidhvānābhyām	nidhvānaiḥ nidhvānebhiḥ
Dative	nidhvānāya	nidhvānābhyām	nidhvānebhyaḥ
Ablative	nidhvānāt	nidhvānābhyām	nidhvānebhyaḥ
Genitive	nidhvānasya	nidhvānayoḥ	nidhvānānām
Locative	nidhvāne	nidhvānayoḥ	nidhvāneṣu

Compound nidhvāna -

Adverb -nidhvānam -nidhvānāt