Declension table of ?mahāśāsana

Neuter	Singular	Dual	Plural
Nominative	mahāśāsanam	mahāśāsane	mahāśāsanāni
Vocative	mahāśāsana	mahāśāsane	mahāśāsanāni
Accusative	mahāśāsanam	mahāśāsane	mahāśāsanāni
Instrumental	mahāśāsanena	mahāśāsanābhyām	mahāśāsanaiḥ
Dative	mahāśāsanāya	mahāśāsanābhyām	mahāśāsanebhyaḥ
Ablative	mahāśāsanāt	mahāśāsanābhyām	mahāśāsanebhyaḥ
Genitive	mahāśāsanasya	mahāśāsanayoḥ	mahāśāsanānām
Locative	mahāśāsane	mahāśāsanayoḥ	mahāśāsaneṣu

Compound mahāśāsana -

Adverb -mahāśāsanam -mahāśāsanāt