Sahih al-Bukhari 1714

It is related that Anas said, "The Prophet, may Allah bless him and grant him peace, prayed Dhuhr doing four rak'ats in Madina and 'Asr doing two rak'ats at Dhu'l-Hulayfa. He spent the night there and in the morning, he mounted his mount and began to say, 'There is no god but Allah' and 'Glory be to Allah'. When he went up to al-Bayda', he said the talbiya for both (hajj and 'umra.) When he entered Makka, he commanded them to come out of ihram and the Prophet, may Allah bless him and grant him peace, sacrificed seven camels standing and sacrificed two black-and white horned rams in Madina." It is related that Anas ibn Malik said, "The Prophet, may Allah bless him and grant him peace, prayed Dhuhr doing four rak'ats in Madina and 'Asr doing two rak'ats at Dhu'l-Hulayfa." It is related from a man from Anas, "Then he stayed the night until morning and prayed Subh. Then he mounted his mount until he was completely settled on it at al-Bayda'. Then he went into ihram for 'umra and hajj."