Humaid says that a person asked Hazrat Anas (may Allah be pleased with him) whether the Prophet (peace and blessings be upon him) used to apply dye. He replied that there were only seventeen or twenty white hairs in the front part of the blessed beard of the Prophet (peace and blessings be upon him), and old age did not bring any defect upon him. Someone asked, "Is old age a defect?" He replied, "Each one of you considers it undesirable." However, Hazrat Abu Bakr Siddiq (may Allah be pleased with him) used to apply a dye of henna and katam, while Hazrat Umar (may Allah be pleased with him) used only henna as dye.