Urwa said to Ibn Abbas, "How long will you keep misleading people, Ibn Abbas?"Ibn Abbas asked, "What do you mean, Urayya?"Urwa replied, "You command us to perform Umra during the months of Hajj, when Abu Bakr and Umar forbade it."Ibn Abbas said, "The Messenger of Allah ﷺ himself did it."Urwa responded, "They were more devoted followers of the Messenger of Allah ﷺ and knew him better than you do."
حدثنا عفان حدثنا وهيب حدثنا أيوب
قال عروة لابن عباس حتى متى تضل الناس يا ابن عباس قال ما ذاك يا عرية قال تأمرنا بالعمرة في أشهر الحج وقد نهى أبو بكر وعمر فقال ابن عباس قد فعلها رسول الله ﷺ فقال عروة كانا هما أتبع لرسول الله ﷺ وأعلم به منك
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Its isnad is sahih. See 2274. His saying, "O Urayya," is the diminutive form of Urwa, meaning Urwa bin Zubayr.