Sahih Bukhari Volume 4, Book 54, Hadith Number 465.

Narated By Abu Huraira : While we were in the company of the Prophet, he said, “While I was asleep, I saw myself in Paradise and there I beheld a woman making ablution beside a palace, I asked, To whom does this palace belong? ‘They said, To ‘Umar bin Al-Khattab.’ Then I remembered ‘Umar’s Ghaira (concerning women), and so I quickly went away from that palace.” (When ‘Umar heard this from the Prophet), he wept and said, “Do you think it is likely that I feel Ghaira because of you, O Allah’s Apostle?”