Nafi reported,

Ibn Umar set out intending to perform Umra, but people informed him that there was unrest in Mecca. He said, "I will enter the state of ihram for Umra, and if I am prevented from completing it, I will do as the Messenger of Allah ﷺ did."So he entered ihram for Umra. After he had traveled a short distance and reached Bayda, he said, "The path of Umra is no different from the path of Hajj. I make Hajj obligatory upon myself." Then he said, "I call you to witness that I have made Hajj obligatory upon myself, for the path of Hajj is the path of Umra."He arrived in Mecca, circled the Kaaba seven times, and walked between Safa and Marwa seven times. He said, "This is how I saw the Messenger of Allah ﷺ do it." Then he came to Qudayd, bought a sacrificial animal, and drove it along with him.

Ahmad 4595

Sahih

حدثنا سفيان حدثنا أيوب بن موسى

عن نافع

خرج ابن عمر يريد العمرة فأخبروه أن بمكة أمرا فقال أهل بالعمرة فإن حبست صنعت كما صنع رسول الله ﷺ فأهل بالعمرة فلما سار قليلا وهو بالبيداء قال ما سبيل العمرة إلا سبيل الحج أوجب حجا وقال أشهدكم أني قد أوجبت حجا فإن سبيل الحج سبيل العمرة فقدم مكة فطاف بالبيت سبعا وبين الصفا والمروة سبعا وقال هكذا رأيت رسول الله ﷺ فعل أتى قديدا فاشترى هديا فساقه معه

أحمد 4595صحيح
Contents
Reference
Commentary
Ayat
Collection
Musnad Ahmad
Book
Abdullah bin Umar
Numbering
Darussalam 4595
Ahmad 4595