I heard the Prophet (ﷺ) saying, "I am your predecessor at the Lake-Fount (Kauthar), and whoever will
come to it, will drink from it, and whoever will drink from it, will never become thirsty after that.
There will come to me some people whom I know and they know me, and then a barrier will be set up
between me and them."
Sahih al-Bukhari Book 92, Hadith 3