in discussing most of the commandments. Maimonides probably knew, therefore, merely through an old tradition which he had heard that such a midrash by R. Ishmael existed.
Evidence in favor of its existence
But there are other circumstances which prove that there was once such a work. Many midrashic
^Compare D. Hoffmann, Zur Einleitung in die Halachischen Midraschim, p. 77; idem, Ueber eine Mechilta zu Deuteronomium, in the Hildesheimer Jubelschrift, German part, pp. 83-98