It is narrated from Sayyiduna Ubayy bin Ka'b (may Allah be pleased with him) that the Prophet (peace and blessings be upon him) said: Some poetry is based on wisdom. It is narrated from Sayyiduna Ka'b bin Malik (may Allah be pleased with him) that the Prophet (peace and blessings be upon him) said: By Him in Whose hand is my soul, the poetry you recite about the polytheists is as if you are showering them with arrows.