Abu Umamah bin Sahl bin Hunaif narrated from some of the companions of the Prophet (s.a.w) that the Prophet (s.a.w) said:
While I was sleeping I saw people presented before me, and that they were wearing shirts. Some of them (the shirts) reaching their breasts, and some of them reaching below that. He said: Then 'Umar was presented before me and he was wearing a shirt that was dragging. They said: How did you interpret that O Messenger of Allah? He said: The religion.