The Messenger of Allah ﷺ said, "I entered Paradise, and there I saw a palace of gold. I asked, 'Whose palace is this?' They said, 'It belongs to a young man from Quraysh.' I thought I was the one, so I asked, 'Whose is it?' They said, 'It belongs to Umar bin Khattab.' Had it not been for what I know of your sense of honor, I would have entered it."Umar said, "Messenger of Allah, would I ever feel any jealousy toward you?"
قال رسول الله ﷺ: دخلت الجنة، فإذا أنا بقصر من ذهب، فقلت: لمن هذا القصر؟ قالوا: لشاب من قريش، فظننت أني أنا هو، فقلت: لمن هو؟ فقالوا: لعمر بن الخطاب، قال: فلولا ما علمت من غيرتك لدخلته، فقال عمر: عليك يا رسول الله أغار؟
Tirmidhi (3688), Nasai in Fadail al-Sahabah (26), and Ahmad (12046), whose wording it is, all narrated it, and Ibn Hibban graded it sahih (6887). All of them narrated it through various routes from Humayd, from Anas, who related it. Its chain of transmission is sahih. Tirmidhi said, "This is a hasan sahih hadith."Ahmad also narrated it in his Musnad (12983, 13847) and in Fadail al-Sahabah (451), and Ibn Hibban narrated it (54), through other routes from Anas with similar wording.