(Whoever sees) in a dream that he drank from the river of al-Kawthar which is in Paradise will attain knowledge, good deeds, sound certainty, and adherence to the Sunna of the Prophet, God bless him and grant him peace. If he is an unbeliever, he will embrace Islam; or if he is a sinner, he will repent; or he will move from innovation to the Sunna, or from a wicked wife to a righteous wife, or from unlawful earnings to lawful earnings.
(Whoever sees) that he drinks from al-Kawthar will attain leadership and triumph, or victory over his enemies, because of His saying, the Exalted:
إِنَّآ أَعْطَيْنَـٰكَ ٱلْكَوْثَرَ
“Indeed, We have granted you, [O Muḥammad], al-Kawthar.”
Quran 108:1 · Saheeh International