Sahih Bukhari
Minor Pilgrammage (Umra)
Volume: 003 / Book Number: 027 / Hadith Number: 25
Narrated Ibn Umar:
Whenever Allah's Apostle left for Mecca, he used to pray in the mosque of Ash-Shajra, and when he returned (to Medina), he used to pray in the middle of the valley of Dhul-Hulaifa and used to pass the night there till morning.