Narrated Sahl bin Sa`d:
I heard the Prophet 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." Abu Sa`id Al-Khudri added that the Prophet further said: "I will say those
people are from me. It will be said, 'You do not know what changes and new things they did after
you.' Then I will say, 'Far removed (from mercy), far removed (from mercy), those who changed (the
religion) after me! "