Declension table of ?reṣṭavya

Masculine	Singular	Dual	Plural
Nominative	reṣṭavyaḥ	reṣṭavyau	reṣṭavyāḥ
Vocative	reṣṭavya	reṣṭavyau	reṣṭavyāḥ
Accusative	reṣṭavyam	reṣṭavyau	reṣṭavyān
Instrumental	reṣṭavyena	reṣṭavyābhyām	reṣṭavyaiḥ reṣṭavyebhiḥ
Dative	reṣṭavyāya	reṣṭavyābhyām	reṣṭavyebhyaḥ
Ablative	reṣṭavyāt	reṣṭavyābhyām	reṣṭavyebhyaḥ
Genitive	reṣṭavyasya	reṣṭavyayoḥ	reṣṭavyānām
Locative	reṣṭavye	reṣṭavyayoḥ	reṣṭavyeṣu

Compound reṣṭavya -

Adverb -reṣṭavyam -reṣṭavyāt