Narrated Al-Bara' bin 'Azib (may Allah be pleased with him): When the Messenger of Allah (peace and blessings be upon him) made the treaty of Hudaybiyyah (with the Quraysh), the document was written by 'Ali (may Allah be pleased with him). He wrote in it: "From Muhammad, the Messenger of Allah (peace and blessings be upon him)." The polytheists objected to this, saying: "Do not write 'the Messenger of Allah' with Muhammad. If you were the Messenger of Allah, why would we be fighting you?" The Prophet (peace and blessings be upon him) said to 'Ali (may Allah be pleased with him): "Erase the words 'the Messenger of Allah'." 'Ali (may Allah be pleased with him) said: "I said, I cannot erase it." So the Prophet (peace and blessings be upon him) erased it himself with his own hand. And he made peace with the polytheists on the condition that he would come to Makkah the following year with his companions for three days, and that they would enter with their weapons sheathed. Al-Bara's students asked him: "What is 'jalban al-silah' that is mentioned here?" He replied: "The sheath and what is inside it is called 'jalban'."