Declension table of ?yatheṣṭāsana

Neuter	Singular	Dual	Plural
Nominative	yatheṣṭāsanam	yatheṣṭāsane	yatheṣṭāsanāni
Vocative	yatheṣṭāsana	yatheṣṭāsane	yatheṣṭāsanāni
Accusative	yatheṣṭāsanam	yatheṣṭāsane	yatheṣṭāsanāni
Instrumental	yatheṣṭāsanena	yatheṣṭāsanābhyām	yatheṣṭāsanaiḥ
Dative	yatheṣṭāsanāya	yatheṣṭāsanābhyām	yatheṣṭāsanebhyaḥ
Ablative	yatheṣṭāsanāt	yatheṣṭāsanābhyām	yatheṣṭāsanebhyaḥ
Genitive	yatheṣṭāsanasya	yatheṣṭāsanayoḥ	yatheṣṭāsanānām
Locative	yatheṣṭāsane	yatheṣṭāsanayoḥ	yatheṣṭāsaneṣu

Compound yatheṣṭāsana -

Adverb -yatheṣṭāsanam -yatheṣṭāsanāt