Sifre

Sifre (Hebrew: סִפְרֵי‎; siphrēy, Sifre, Sifrei, also, Sifre debe Rab or Sifre Rabbah) refers to either of two works of Midrash halakhah, or classical Jewish legal Biblical exegesis, based on the biblical books of Bamidbar (Numbers) and Devarim (Deuteronomy).