‘Amir b. Sa‘d b. Abu Waqqas told that Sa‘d b. Abu Waqqas said during his illness of which he died, “Make a niche for me in the side of the grave, and set up bricks over me as was done with God’s messenger.”
Abu Mas'ud al-Ansari said God’s messenger forbade that the imam should stand on anything when the people were behind him, meaning on a lower level than he was.
Daraqutnl transmitted it in al-Mujtaba in Kitab al-jana’iz.