Musnad Ahmad 32:1903

Bahz narrated to us, Hammam narrated to us, Qatadah narrated to us, he said: Anas narrated to us, that the Prophet (peace and blessings of Allah be upon him) said: "While I was walking in Paradise, I suddenly came upon a palace. I said: 'To whom does this belong, O Jibril?' And I hoped that it would be for me." He said: "He said: 'For Umar.'" He said: "Then I walked for a while, and I suddenly came upon a palace better than the first palace." He said: "I said: 'To whom does this belong, O Jibril?' And I hoped that it would be for me." He said: "He said: 'For Umar. And within it are the wide-eyed houris, O Abu Hafs, and nothing prevented me from entering it except your protective jealousy (ghirah).'" He said: Umar’s eyes filled with tears, then he said: "Would I feel protective jealousy against you?"