‏الزكاة : Hadeeth No:2184 Jabir reported that a person among the Ansar who was called Abu Madhkur granted posthumous freedom to his slave who was called Ya'qub. The rest of the hadith is the same....

‏صفة القيامة والجنة والنار‏ : Hadeeth No:6736 Anas reported this hadlth through another chain of transmitters and the words are:" It would be said to him: You have told a lie; what had been demanded from you was quite easier than this (the belief in the Oneness of Allaah)."...