Sayyiduna Abu Sa'id Khudri (may Allah be pleased with him) narrates: Once there was a dispute between Sayyiduna Abdur Rahman bin Awf (may Allah be pleased with him) and Sayyiduna Khalid (may Allah be pleased with him) over something. Sayyiduna Khalid (may Allah be pleased with him) spoke harshly to him. The Prophet (peace and blessings of Allah be upon him) said: Do not speak ill of any of my companions. If any one of you were to spend gold equal to Mount Uhud in charity, it would not reach even a mudd, or even half a mudd, of what they gave.