 What may be the oldest manuscript copy is part of a prayer book reportedly dated to about 840 CE.The first publication was in 1519 in Constantinople within an anthology called "Liqqutim Shonim".It was reprinted again along with the "Sefer Malkiel" in Vilna in 1819, and again by Adolph Jellinek in his "Bet Ha-Midrasch" (1853–77) and S. A. Wertheimer in his "Leqet Midrashim" (Jerusalem, 1903).