Ibn Umar intended to perform the Hajj the year Hajjaj came to fight Ibn Zubayr. He was told, "There is going to be fighting between the people, and we fear that they may prevent you from reaching the House."He replied, "You have an excellent example in the Messenger of Allah" [Ahzab 33:21]. "I will do as the Messenger of Allah ﷺ did. I call you to witness that I have made Umra obligatory upon myself."Then he set out, and when he reached the open ground of Bayda he said, "Hajj and Umra are but one and the same. Bear witness." Ibn Rumh's version reads, "I call you to witness that I have made Hajj obligatory upon myself along with my Umra."He drove a sacrificial animal which he had bought at Qudayd, then proceeded reciting the talbiyah for both together until he arrived in Mecca. He performed tawaf around the House and saa between Safa and Marwa, doing nothing beyond that. He did not slaughter, nor shave, nor shorten his hair, nor release himself from any of the restrictions of ihram, until the Day of Sacrifice came. Then he slaughtered and shaved, considering that his initial tawaf had fulfilled the tawaf of both Hajj and Umra.Ibn Umar said, "This is exactly what the Messenger of Allah ﷺ did."
و حدثنا محمد بن رمح أخبرنا الليث ح و حدثنا قتيبة واللفظ له حدثنا ليث
أن ابن عمر أراد الحج عام نزل الحجاج بابن الزبير فقيل له إن الناس كائن بينهم قتال وإنا نخاف أن يصدوك فقال {لقد كان لكم في رسول الله أسوة حسنة} أصنع كما صنع رسول الله ﷺ إني أشهدكم أني قد أوجبت عمرة ثم خرج حتى إذا كان بظاهر البيداء قال ما شأن الحج والعمرة إلا واحد اشهدوا قال ابن رمح أشهدكم أني قد أوجبت حجا مع عمرتي وأهدى هديا اشتراه بقديد ثم انطلق يهل بهما جميعا حتى قدم مكة فطاف بالبيت وبالصفا والمروة ولم يزد على ذلك ولم ينحر ولم يحلق ولم يقصر ولم يحلل من شيء حرم منه حتى كان يوم النحر فنحر وحلق ورأى أن قد قضى طواف الحج والعمرة بطوافه الأول وقال ابن عمر كذلك فعل رسول الله ﷺ