Book 24, Hadith 276

It was narrated that Anas said:"The Prophet entered Makkah during Umratul-Qada' and Ibn Rawahah went before him, saying: Get out of his way, you unbelievers, make way. Today we will fight about its revelation With blows that will remove heads from shoulders And make friend unmindful of friend. Umar said to him: "O Ibn Rawahah! In the Sanctuary of Allah and in front of the Messenger of Allah you recite poetry?" The Prophet said: "Let him do that, for by the one in whose hand is my soul, his words are harder for them than being shot with arrows