sentences:  He drew from the ethical and historical aggadah, such as Abot de-Rabbi Natan, Tanna debe Eliyahu (Rabbah and Zuṭa), Derek Ereẓ, Masseket Gan Eden, Midrash Wayissa'u, the Chronicle of Moses, and the Midrash on the Death of Moses.The author's chief source, however, was the explanatory midrashim, such as the midrash rabbot on Pentateuch (with the exception of Exodus Rabbah), Pesiḳta, Pesiḳta Rabbati, Yelammedenu, Tanḥuma, Debarim Zuṭa, Midrash Abba Gorion, Esfa, Tadshe, Abkir, Pirḳe Rabbi Eli'ezer, and the midrashim on Samuel, Psalms, Proverbs, and Job.The latter works are often cited simply as "Midrash," without any more definite identification.