عَنْ عَبْدِ الرَّحْمَنِ بْنِ عَبْدِ اللَّهِ بْنِ كَعْبٍ عَنْ كَعْبِ بْنِ مَالِكٍ رَضِيَ اللَّهُ عَنْهُ قَالَ قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَآلِهِ وَسَلَّمَ اهْجُوا الْمُشْرِكِينَ بِالشِّعْرِ إِنَّ الْمُؤْمِنَ يُجَاهِدُ بِنَفْسِهِ وَمَالِهِ وَالَّذِي نَفْسُ مُحَمَّدٍ بِيَدِهِ كَأَنَّمَا يَنْضَحُوهُمْ بِالنَّبْلِ
It is narrated from Sayyiduna Ka'b bin Malik (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: Satirize the polytheists through poetry, indeed the believer strives with his self and his wealth. By Him in Whose hand is the life of Muhammad (peace and blessings be upon him)! It is as if these poets are throwing arrows at them.