“Lanner welivsomim” is a piyyut (sacred poem) written by the Yemenite poet Sa'adyah, of whom we know nothing more than his name. This piyyut is sung by Yemenites on Saturday nights at the domestic ceremonies marking the close of the Sabbath, and is to be found in the Yemenite diwan (Book of Sacred Poems), in their tiklal (Book of Prayer), and in the Diwan of Hebrew and Arabic Poetry of the Yemenite Jews, edited by A. Z. Idelson and H. Torczyner, Cincinnati 1930.