Maymun bin Abi Shabib says that an official began to praise Hazrat Uthman (may Allah be pleased with him), so Hazrat Miqdad (may Allah be pleased with him) stepped forward and began to throw dust on his face. Hazrat Uthman (may Allah be pleased with him) asked him, "What is this?" He replied that the Noble Prophet (peace and blessings be upon him) said, "When you see someone praising another, throw dust on his face."