Hazrat Abu Safar (may Allah have mercy on him) narrates that Hazrat Ali (may Allah be pleased with him) was often seen wearing a particular sheet, so he was asked: "Indeed, you (may Allah be pleased with you) often wear this sheet?" He (may Allah be pleased with him) replied: "This was given to me to wear by my very close, sincere, and special friend Umar bin Khattab (may Allah be pleased with him). Indeed, Umar (may Allah be pleased with him) repented to Allah with sincerity, so Allah also accepted his repentance." Then he (may Allah be pleased with him) began to weep.