صحيح مسلم

Ibn Abbas reported that the Muslims neither looked to Abu Sufyan (with respect) nor did they sit in his company. he (Abu Sufyan) said to Allah's Messenger (ﷺ): Allah's Messenger, confer upon me three things. He replied in the affirmative. He (further) said: I have with me the most handsome and the best (woman) Umm Habiba, daughter of Abu Sufyan; marry her, whereupon he said: Yes. And he again said: Accept Mu'awiya to serve as your scribe. He said: Yes. He again said: Make me the commander (of the Muslim army) so that I should fight against the unbelievers as I fought against the Muslims. He said: Yes. Abu Zumnail said: If he had not asked for these three things from Allah's Messenger (ﷺ), he would have never conferred them upon him, for it was (his habit) to accede to everybody's (earnest) request.