It is narrated from Sayyiduna Jabir (may Allah be pleased with him) that the Prophet (peace and blessings be upon him) once said: "I entered Paradise and saw a palace there. I heard a voice there, so I asked, 'Whose palace is this?' It was said, 'This is Umar's.' I wanted to enter it, but O Abu Hafs! I remembered your sense of honor." Upon this, Sayyiduna Umar (may Allah be pleased with him) began to weep and said, "O Messenger of Allah! Would I ever express honor over you?"
Hadith Referenceمسند احمد / مسند المكثرين من الصحابة / 14321