Declension table of ?prahartavya

Masculine	Singular	Dual	Plural
Nominative	prahartavyaḥ	prahartavyau	prahartavyāḥ
Vocative	prahartavya	prahartavyau	prahartavyāḥ
Accusative	prahartavyam	prahartavyau	prahartavyān
Instrumental	prahartavyena	prahartavyābhyām	prahartavyaiḥ prahartavyebhiḥ
Dative	prahartavyāya	prahartavyābhyām	prahartavyebhyaḥ
Ablative	prahartavyāt	prahartavyābhyām	prahartavyebhyaḥ
Genitive	prahartavyasya	prahartavyayoḥ	prahartavyānām
Locative	prahartavye	prahartavyayoḥ	prahartavyeṣu

Compound prahartavya -

Adverb -prahartavyam -prahartavyāt