Sahih Bukhari
Prayer at Night (Tahajjud)
Volume: 002 / Book Number: 021 / Hadith Number: 284
Narrated 'Abdullah bin Dinar:
Ibn 'Umar said, "The Prophet used to go to the Mosque of Quba every Saturday (sometimes) walking and (sometimes) riding." 'Abdullah (Ibn 'Umar) used to do the same.