Declension table of ?nirāsana

Neuter	Singular	Dual	Plural
Nominative	nirāsanam	nirāsane	nirāsanāni
Vocative	nirāsana	nirāsane	nirāsanāni
Accusative	nirāsanam	nirāsane	nirāsanāni
Instrumental	nirāsanena	nirāsanābhyām	nirāsanaiḥ
Dative	nirāsanāya	nirāsanābhyām	nirāsanebhyaḥ
Ablative	nirāsanāt	nirāsanābhyām	nirāsanebhyaḥ
Genitive	nirāsanasya	nirāsanayoḥ	nirāsanānām
Locative	nirāsane	nirāsanayoḥ	nirāsaneṣu

Compound nirāsana -

Adverb -nirāsanam -nirāsanāt