Declension table of ?samadhva

Neuter	Singular	Dual	Plural
Nominative	samadhvam	samadhve	samadhvāni
Vocative	samadhva	samadhve	samadhvāni
Accusative	samadhvam	samadhve	samadhvāni
Instrumental	samadhvena	samadhvābhyām	samadhvaiḥ
Dative	samadhvāya	samadhvābhyām	samadhvebhyaḥ
Ablative	samadhvāt	samadhvābhyām	samadhvebhyaḥ
Genitive	samadhvasya	samadhvayoḥ	samadhvānām
Locative	samadhve	samadhvayoḥ	samadhveṣu

Compound samadhva -

Adverb -samadhvam -samadhvāt