Musnad Ahmad Hadith 23093

An Ansari companion (may Allah be pleased with him) says that once I left my house with the intention of presenting myself before the Prophet Muhammad (ﷺ). When I arrived there, I saw that the Prophet Muhammad (ﷺ) was standing, and with him was another man whose face was towards the Prophet (ﷺ). I thought that perhaps the two were discussing something important. By Allah! The Prophet (ﷺ) stood for so long that I began to feel pity for him. When that man left, I said, "O Messenger of Allah! This man kept you standing for so long that I began to feel pity for you." The Prophet (ﷺ) said, "Did you see him?" I replied, "Yes." The Prophet (ﷺ) said, "Do you know who he was?" I replied, "No." The Prophet (ﷺ) said, "He was Jibreel (Gabriel, peace be upon him), who kept advising me continuously about the neighbor until I thought he would make him an heir in inheritance." Then he said, "If you had greeted him, he would surely have replied to you."