Declension table of ?vastuśāsana

Neuter	Singular	Dual	Plural
Nominative	vastuśāsanam	vastuśāsane	vastuśāsanāni
Vocative	vastuśāsana	vastuśāsane	vastuśāsanāni
Accusative	vastuśāsanam	vastuśāsane	vastuśāsanāni
Instrumental	vastuśāsanena	vastuśāsanābhyām	vastuśāsanaiḥ
Dative	vastuśāsanāya	vastuśāsanābhyām	vastuśāsanebhyaḥ
Ablative	vastuśāsanāt	vastuśāsanābhyām	vastuśāsanebhyaḥ
Genitive	vastuśāsanasya	vastuśāsanayoḥ	vastuśāsanānām
Locative	vastuśāsane	vastuśāsanayoḥ	vastuśāsaneṣu

Compound vastuśāsana -

Adverb -vastuśāsanam -vastuśāsanāt