Sahih Muslim
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-Fadail Al-Sahabah)
Book Number: 031 / Hadith Number: 5927
'Abdullah b. 'Amir b. Rabi reported A'isha as saying: Allah's Messenger (may peace be upon him) went to bed one night; the rest of the hadith is the same.