It is narrated from Sayyiduna Abdul Muttalib bin Rabee’ah bin Harith bin Abdul Muttalib that Sayyiduna Abbas (may Allah be pleased with him) came to the service of the Messenger of Allah (peace and blessings be upon him) in a state of anger. The Prophet (peace and blessings be upon him) asked him: "What has made you angry?" He said: "O Messenger of Allah! What enmity do the Quraysh have with us? When they meet each other, they meet with great happiness, but when they meet us, their faces change." Upon hearing this, the Messenger of Allah (peace and blessings be upon him) became so angry that his face turned red and sweat began to flow from his forehead. Whenever the Prophet (peace and blessings be upon him) became extremely angry, sweat would begin to flow. When this state of the Prophet (peace and blessings be upon him) subsided, he said: "By Him in Whose hand is my soul! Faith cannot enter anyone’s heart until he loves you for the sake of Allah Almighty and His Messenger." (In another narration: "Until he loves you for the sake of Allah Almighty and because of my kinship.") Then he said: "O people! (Remember) Whoever hurts Abbas (may Allah be pleased with him), has hurt me. A man’s uncle is like his father."