The Book Pertaining to the Merits of the Companions (Allah Be Pleased With Them) of the Holy Prophet (May Peace Be Upon Him) (Kitab Al-Fada'il Al-Sahabah)
Muslim :: Book 31 : Hadith 6079
'A'isha reported that Hassin said: Allah's Messenger, permit me to write satire against Abu Sufyan, whereupon he said: How can it be because I am also related to him? Thereupon he (Hassan) said: By Him Who has honoured you. I shall draw you out from them (their family) just as hair is drawn out from the fermented (flour). Thereupon Hassan said: The dignity and greatness belongs to the tribe of Bint Makhzum from amongst the tribe of Hisham, whereas your father was a slave.