Declension table of sthirāsana

Neuter	Singular	Dual	Plural
Nominative	sthirāsanam	sthirāsane	sthirāsanāni
Vocative	sthirāsana	sthirāsane	sthirāsanāni
Accusative	sthirāsanam	sthirāsane	sthirāsanāni
Instrumental	sthirāsanena	sthirāsanābhyām	sthirāsanaiḥ
Dative	sthirāsanāya	sthirāsanābhyām	sthirāsanebhyaḥ
Ablative	sthirāsanāt	sthirāsanābhyām	sthirāsanebhyaḥ
Genitive	sthirāsanasya	sthirāsanayoḥ	sthirāsanānām
Locative	sthirāsane	sthirāsanayoḥ	sthirāsaneṣu

Compound sthirāsana -

Adverb -sthirāsanam -sthirāsanāt