Declension table of vistara

Masculine	Singular	Dual	Plural
Nominative	vistaraḥ	vistarau	vistarāḥ
Vocative	vistara	vistarau	vistarāḥ
Accusative	vistaram	vistarau	vistarān
Instrumental	vistareṇa	vistarābhyām	vistaraiḥ vistarebhiḥ
Dative	vistarāya	vistarābhyām	vistarebhyaḥ
Ablative	vistarāt	vistarābhyām	vistarebhyaḥ
Genitive	vistarasya	vistarayoḥ	vistarāṇām
Locative	vistare	vistarayoḥ	vistareṣu

Compound vistara -

Adverb -vistaram -vistarāt