Declension table of ?asanmantra

Masculine	Singular	Dual	Plural
Nominative	asanmantraḥ	asanmantrau	asanmantrāḥ
Vocative	asanmantra	asanmantrau	asanmantrāḥ
Accusative	asanmantram	asanmantrau	asanmantrān
Instrumental	asanmantreṇa	asanmantrābhyām	asanmantraiḥ asanmantrebhiḥ
Dative	asanmantrāya	asanmantrābhyām	asanmantrebhyaḥ
Ablative	asanmantrāt	asanmantrābhyām	asanmantrebhyaḥ
Genitive	asanmantrasya	asanmantrayoḥ	asanmantrāṇām
Locative	asanmantre	asanmantrayoḥ	asanmantreṣu

Compound asanmantra -

Adverb -asanmantram -asanmantrāt