Declension table of ?mahāśana

Masculine	Singular	Dual	Plural
Nominative	mahāśanaḥ	mahāśanau	mahāśanāḥ
Vocative	mahāśana	mahāśanau	mahāśanāḥ
Accusative	mahāśanam	mahāśanau	mahāśanān
Instrumental	mahāśanena	mahāśanābhyām	mahāśanaiḥ mahāśanebhiḥ
Dative	mahāśanāya	mahāśanābhyām	mahāśanebhyaḥ
Ablative	mahāśanāt	mahāśanābhyām	mahāśanebhyaḥ
Genitive	mahāśanasya	mahāśanayoḥ	mahāśanānām
Locative	mahāśane	mahāśanayoḥ	mahāśaneṣu

Compound mahāśana -

Adverb -mahāśanam -mahāśanāt