Abu Burda reported Allahs Messenger ﷺ as saying: There would come people amongst the Muslims on the Day of Resurrection with as heavy sins as a mountain, and Allah would forgive them and He would place in their stead the Jews and the Christians. (As far as I think), Abu Raub said: I do not know as to who is in doubt. Abu Burda said: I narrated it to Umar bin Abdul Aziz (RA) , whereupon he said: Was it your father who narrated it to you from Allahs Apostle ﷺ ? I said: Yes.