Silsilat al-Ahadith al-Sahihah

Haibrah bin Maryam says that Sayyiduna Hasan bin Ali (may Allah be pleased with him) delivered a sermon to the people and said: O people! Yesterday, such a man (Sayyiduna Ali, may Allah be pleased with him) departed from you, whom the former people could not surpass and the later people will not attain his (status). Whenever the Messenger of Allah (peace and blessings be upon him) sent out an army, he would hand over the flag to him, and he would not return until victory was achieved. On his right side was Jibreel and on his left side was Mikaeel. He meant Sayyiduna Ali (may Allah be pleased with him). He did not leave behind any dirham or dinar, except for seven hundred dirhams, and even those remained because he intended to buy a servant.

Sayyiduna Ali (may Allah be pleased with him) says: The Noble Prophet (peace and blessings be upon him) said to me and Sayyiduna Abu Bakr (may Allah be pleased with him) on the day of Badr: "With one of you is Jibreel and with the other is Mikaeel, and Israfeel is also a very great angel who participates in battle or in the battle ranks."