Declension table of ?mahāpavitra

Masculine	Singular	Dual	Plural
Nominative	mahāpavitraḥ	mahāpavitrau	mahāpavitrāḥ
Vocative	mahāpavitra	mahāpavitrau	mahāpavitrāḥ
Accusative	mahāpavitram	mahāpavitrau	mahāpavitrān
Instrumental	mahāpavitreṇa	mahāpavitrābhyām	mahāpavitraiḥ mahāpavitrebhiḥ
Dative	mahāpavitrāya	mahāpavitrābhyām	mahāpavitrebhyaḥ
Ablative	mahāpavitrāt	mahāpavitrābhyām	mahāpavitrebhyaḥ
Genitive	mahāpavitrasya	mahāpavitrayoḥ	mahāpavitrāṇām
Locative	mahāpavitre	mahāpavitrayoḥ	mahāpavitreṣu

Compound mahāpavitra -

Adverb -mahāpavitram -mahāpavitrāt