It is narrated from Hazrat Abu Saeed Khudri (may Allah be pleased with him) that the Prophet (peace and blessings be upon him) said: Some of you will fight over the interpretation and explanation of the Qur'an just as I fought over its revelation. Upon this, Hazrat Abu Bakr and Umar (may Allah be pleased with them) stood up, but the Prophet (peace and blessings be upon him) said: No, it is the one who is mending the sandal. And at that time, Hazrat Ali (may Allah be pleased with him) was mending his sandal.