It is narrated from Hazrat Anas (may Allah be pleased with him) that the Prophet (peace and blessings be upon him) said: Once I entered Paradise and saw a palace made of gold there. I asked, "Whose palace is this?" People replied, "It belongs to a young man from the Quraysh." I thought it was me, so I asked, "Who is he?" People replied, "Umar ibn Khattab (may Allah be pleased with him)."
Hadith Referenceمسند احمد / مسند المكثرين من الصحابة / 13775