Sahih Bukhari Volume 4, Book 61, Hadith 3533

حَدَّثَنِي عُثْمَانُ بْنُ أَبِي شَيْبَةَ، حَدَّثَنَا عَبْدَةُ، عَنْ هِشَامٍ، عَنْ أَبِيهِ، عَنْ عَائِشَةَ ـ رضى الله عنها ـ قَالَتِ اسْتَأْذَنَ حَسَّانُ النَّبِيَّ صلى الله عليه وسلم فِي هِجَاءِ الْمُشْرِكِينَ، قَالَ ‏"‏ كَيْفَ بِنَسَبِي ‏"‏‏.‏ فَقَالَ حَسَّانُ لأَسُلَّنَّكَ مِنْهُمْ كَمَا تُسَلُّ الشَّعَرَةُ مِنَ الْعَجِينِ‏.‏ وَعَنْ أَبِيهِ قَالَ ذَهَبْتُ أَسُبُّ حَسَّانَ عِنْدَ عَائِشَةَ فَقَالَتْ لاَ تَسُبُّهُ فَإِنَّهُ كَانَ يُنَافِحُ عَنِ النَّبِيِّ صلى الله عليه وسلم‏.‏

Narrated By 'Aisha : Once Hassan bin Thabit asked the permission of the Prophet to lampoon (i.e. compose satirical poetry defaming) the infidels. The Prophet said, "What about the fact that I have common descent with them?" Hassan replied, "I shall take you out of them as a hair is taken out of dough." Narrated 'Urwa: I started abusing Hassan in front of 'Aisha, whereupon she said. "Don't abuse him, for he used to defend the Prophet (with his poetry)."