It is narrated from Sayyiduna Salamah bin Akwa’ (may Allah be pleased with him) that whenever I heard the Prophet (peace and blessings of Allah be upon him) begin a supplication, I heard him start it by saying: "Subhana Rabbi al-A‘la al-‘Ali al-Wahhab." It is also narrated from Sayyiduna Salamah bin Akwa’ (may Allah be pleased with him) that at Hudaybiyyah, under the tree, I pledged allegiance to the right hand of the Prophet (peace and blessings of Allah be upon him) along with the other people. When I passed by again, the Prophet (peace and blessings of Allah be upon him) said: "Salamah! Pledge allegiance." I said: "O Messenger of Allah! I have already pledged allegiance." The Prophet (peace and blessings of Allah be upon him) said: "Do it again." So I pledged allegiance again.