Mujahid reported,

There was a man from the Muhajirun named Abdul-Rahman bin Safwan who had rendered excellent service to Islam and was a friend of Abbas. On the day of the conquest of Mecca, he brought his father to the Messenger of Allah ﷺ and said, "Messenger of Allah, take his pledge on emigration."But the Messenger of Allah ﷺ refused, saying, "There is no emigration."So he went to Abbas, who was at the watering place, and said, "Abu Fadl, I came to the Messenger of Allah ﷺ with my father so that he might take his pledge on emigration, but he refused."Abbas got up and went with him, without even a cloak on, and said, "Messenger of Allah, you know the relationship between me and so-and-so. He brought you his father so that you might take his pledge on emigration, but you refused."The Messenger of Allah ﷺ said, "There is no emigration."Abbas said, "I adjure you, you must take his pledge."So the Messenger of Allah ﷺ extended his hand and said, "Come, I have honored my uncle's oath, but there is no emigration."

حدثنا جرير عن يزيد بن أبي زياد

عن مجاهد قال

كان رجل من المهاجرين يقال له عبد الرحمن بن صفوان وكان له بلاء في الإسلام حسن وكان صديقا للعباس فلما كان يوم فتح مكة جاء بأبيه إلى رسول الله ﷺ فقال يا رسول الله بايعه على الهجرة فأبى وقال إنها لا هجرة فانطلق إلى العباس وهو في السقاية فقال يا أبا الفضل أتيت رسول الله ﷺ بأبي يبايعه على الهجرة فأبى قال فقام العباس معه وما عليه رداء فقال يا رسول الله قد عرفت ما بيني وبين فلان وأتاك بأبيه لتبايعه على الهجرة فأبيت فقال رسول الله ﷺ إنها لا هجرة فقال العباس أقسمت عليك لتبايعنه قال فبسط رسول الله ﷺ يده قال فقال هات أبررت قسم عمي ولا هجرة