Declension table of nirvāṇamantra

Neuter	Singular	Dual	Plural
Nominative	nirvāṇamantram	nirvāṇamantre	nirvāṇamantrāṇi
Vocative	nirvāṇamantra	nirvāṇamantre	nirvāṇamantrāṇi
Accusative	nirvāṇamantram	nirvāṇamantre	nirvāṇamantrāṇi
Instrumental	nirvāṇamantreṇa	nirvāṇamantrābhyām	nirvāṇamantraiḥ
Dative	nirvāṇamantrāya	nirvāṇamantrābhyām	nirvāṇamantrebhyaḥ
Ablative	nirvāṇamantrāt	nirvāṇamantrābhyām	nirvāṇamantrebhyaḥ
Genitive	nirvāṇamantrasya	nirvāṇamantrayoḥ	nirvāṇamantrāṇām
Locative	nirvāṇamantre	nirvāṇamantrayoḥ	nirvāṇamantreṣu

Compound nirvāṇamantra -

Adverb -nirvāṇamantram -nirvāṇamantrāt