It is narrated from Hazrat Abu Saeed Khudri (may Allah be pleased with him) that once we were sitting and waiting for the Prophet (peace and blessings be upon him), when the Prophet (peace and blessings be upon him) came from the house of one of his noble wives. We started walking with the Prophet (peace and blessings be upon him). On the way, the sandal of the Prophet (peace and blessings be upon him) broke. Hazrat Ali (may Allah be pleased with him) stopped and began to mend the sandal, and the Prophet (peace and blessings be upon him) went ahead. We also kept walking. When we reached a place, the Prophet (peace and blessings be upon him) stopped and began to wait for Hazrat Ali (may Allah be pleased with him). We also stopped. During this, the Prophet (peace and blessings be upon him) said: "Among you there will be a man who will fight for the interpretation and explanation of the Holy Qur'an just as I fought for its revelation." Hearing this, we began to look around at each other. At that time, Hazrat Abu Bakr and Umar (may Allah be pleased with them) were also present among us, but the Prophet (peace and blessings be upon him) said: "It is the one who is mending the sandal." Upon this, we went to give Hazrat Ali (may Allah be pleased with him) this glad tidings, and it seemed as if he had already heard this himself.