Declension table of ?sadhanitva

Neuter	Singular	Dual	Plural
Nominative	sadhanitvam	sadhanitve	sadhanitvāni
Vocative	sadhanitva	sadhanitve	sadhanitvāni
Accusative	sadhanitvam	sadhanitve	sadhanitvāni
Instrumental	sadhanitvena	sadhanitvābhyām	sadhanitvaiḥ
Dative	sadhanitvāya	sadhanitvābhyām	sadhanitvebhyaḥ
Ablative	sadhanitvāt	sadhanitvābhyām	sadhanitvebhyaḥ
Genitive	sadhanitvasya	sadhanitvayoḥ	sadhanitvānām
Locative	sadhanitve	sadhanitvayoḥ	sadhanitveṣu

Compound sadhanitva -

Adverb -sadhanitvam -sadhanitvāt