Islamic Interpretation of Dreams (Ibn-i Sirin):
(Plenitude; Abundance; A river in paradise.) To drink from the Kawthar river of paradise in a dream means acquiring knowledge, developing correct deeds, having perfect certitude and truly emulating the leading practices and character of Godâs Messenger, upon whom be peace. Drinking from the Kawthar river in a dream also means repentance from sin, abandoning innovations, marriage to a chaste and a pious woman, replacing unlawful earnings with lawful ones, endowment of leadership and victory.
(Also see River)