From Sahih Muslim (Hadith 6393):
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
Reference: Muslim 6393