Sahih al-Bukhari 1708

It is related that Nafi' said, "Ibn 'Umar made the intention to go on hajj in the year of the Hajj of al-Haruriyya* in the time of Ibn az-Zubayr. He was told, 'There may well be fighting between the people and we are afraid that they will bar your way.' He said, '"You have a good model in the Messenger of Allah." I will do as he did. I testify to you that I have gone into ihram to perform 'umra.' When he was at al-Bayda' he stated, 'The business of the hajj and the 'umra is the same. I testify to you that I have joined hajj with 'umra.' He drove a garlanded sacrificial animal which he had purchased. When he arrived, he did tawaf of the House and Safa and did not do more than that and did not make lawful for himself any of the things which were unlawful until the Day of Sacrifice. He shaved (his head) and sacrificed and considered that he had completed his tawaf for both hajj and 'umra with his first tawaf. Then he said, 'That is how the Prophet, may Allah bless him and grant him peace, did it.'" [The Kharijites. Harura' is a town near Kufa which was the Kharijite base. In 68/688, there were four distinct groups who performed hajj, each separate from one another: Ibn az-Zubayr, Muhammad ibn al-Hanafiyya, the Umayyads, and the Kharijites under Najda.]