Narrated Anas:
that the Prophet (ﷺ) said: "I entered Paradise and it was as if I was in a palace of gold. So I said: 'Whose palace is this?' They said: 'A youth's, from the Quraish.' So I thought that I was him. I said: 'And who is he?' They said: "'Umar bin Al-Khattab."
English reference: Vol. 1, Book 46, Hadith 3688
Arabic reference: Book 49, Hadith 4052