Sayyiduna Abu Sa'id Khudri (may Allah be pleased with him) says: We were sitting, waiting for the Messenger of Allah (peace and blessings of Allah be upon him), when he came out from the house of one of his wives and came to us. We stood up (and) walked with him. His sandal broke, and Sayyiduna Ali (may Allah be pleased with him) stayed behind to stitch it. The Messenger of Allah (peace and blessings of Allah be upon him) kept walking and we walked with him. At one place, he stopped to wait for Sayyiduna Ali (may Allah be pleased with him), and we also stopped with him. The Prophet (peace and blessings of Allah be upon him) said: "Some of you will strive in jihad according to the interpretation of this Qur'an, just as I do." We began to look around, and among us were Abu Bakr and Umar (may Allah be pleased with them both). The Prophet (peace and blessings of Allah be upon him) said: "No, I mean the one who is stitching the sandal (Ali)." We went to give Sayyiduna Ali (may Allah be pleased with him) the glad tidings, but it seemed as if he had already heard this good news himself.