It is narrated from Sayyiduna Khalid bin Walid (may Allah be pleased with him), he says: There was some dispute between me and Sayyiduna Ammar bin Yasir (may Allah be pleased with him), and I said some harsh words to him. Sayyiduna Ammar (may Allah be pleased with him) went to complain about me to the Noble Prophet (peace and blessings be upon him). After him, Sayyiduna Khalid (may Allah be pleased with him) also went to the Noble Prophet (peace and blessings be upon him) regarding the complaint and began to say harsh things about him, and the intensity of his words kept increasing. The Noble Prophet (peace and blessings be upon him) was silent, not saying anything. Seeing this, Ammar (may Allah be pleased with him) began to weep and said: O Messenger of Allah! Do you not see what he is saying? The Messenger of Allah (peace and blessings be upon him) raised his blessed head and said: Whoever harbors enmity against Ammar, Allah will harbor enmity against him, and whoever bears malice against Ammar, Allah will bear malice against him. Sayyiduna Khalid (may Allah be pleased with him) says: When I returned from the presence of the Noble Prophet (peace and blessings be upon him), the most important and beloved thing in my eyes was that Ammar (may Allah be pleased with him) should be pleased with me, so I went and met him, and he became pleased with me. Abdullah bin Imam Ahmad says: I heard this hadith from my father twice.