The Book Pertaining to the Merits of the Companions (Allah Be Pleased With Them) of the Holy Prophet (May Peace Be Upon Him) (Kitab Al-Fada'il Al-Sahabah)
Muslim :: Book 31 : Hadith 6056
Ibn 'Umar reported: I saw in a state of sleep as if I have in my hand a piece of silk cloth and there is no place in the Paradise where I intend to reach but that piece of cloth does not fly towards it. I made a mention of it to Hafsa (the sister of Ibn 'Umar) and Hafsa made a mention of it to Allah's Apostle (may peace be upon him), whereupon Allah's Apostle (may peace be upon him) said: I find 'Abdullah b 'Umar a pious person.