Sahih Bukhari Volume 002, Book 020, Hadith Number 187.
Hadith Section/Book: Sahih Bukhari Sahih Bukhari Book 20. Shortening The Prayers (At-Taqseer)
Narated By Yahya bin Ishaq : I heard Anas saying, "We travelled with the Prophet from Medina to Mecca and offered two Rakat (for every prayer) till we returned to Medina." I said, "Did you stay for a while in Mecca?" He replied, "We stayed in Mecca for ten days."