Sahl (b. Sa'd) reported
I heard Allah's Apostle (ﷺ) as saying : I shall go to the Cistern before you and he who comes would drink and he who drinks would never feel thirsty , and there would come to me people whom I would know and who would know me. Then there would be intervention between me and them. Abu Hazim said that Nu'man b. Abu 'Ayyash heard it and I narrated to them this hadith , and said : Is it this that you heard Sahl saying ? He said : Yes , and I bear witness to the fact that I heard it from Abu Sa'id Khudri also , but he made this addition that he (the Holy Prophet) would say : They are my followers , and it would be said to him : You do not know what they did after you and I will say to them : Woe to him who changes (his religion) after me.