Declension table of upāsaka

Masculine	Singular	Dual	Plural
Nominative	upāsakaḥ	upāsakau	upāsakāḥ
Vocative	upāsaka	upāsakau	upāsakāḥ
Accusative	upāsakam	upāsakau	upāsakān
Instrumental	upāsakena	upāsakābhyām	upāsakaiḥ upāsakebhiḥ
Dative	upāsakāya	upāsakābhyām	upāsakebhyaḥ
Ablative	upāsakāt	upāsakābhyām	upāsakebhyaḥ
Genitive	upāsakasya	upāsakayoḥ	upāsakānām
Locative	upāsake	upāsakayoḥ	upāsakeṣu

Compound upāsaka -

Adverb -upāsakam -upāsakāt