The Sifre to Deuteronomy is of an entirely different nature. The main portion (Nos. 53-303), "halakhic" in character, is preceded and followed by aggadic parts, and it has all the characteristics of a midrash from the school of Rabbi Akiva. The principles underlying the exposition are the same as those in Sifra. The term "mufneh" in the application of the principle "gezerah shavah" occurs only once, and is to be regarded as a later addition. The technical terms are largely the same in both midrashim, different terms being found only here and there in the Sifre. Moreover, the group of tannaim is different from that of the Mekhilta le-Sefer Devarim (Mekhilta to Deuteronomy). Those frequently mentioned in the latter (Rabbi Josiah, Rabbi Jonathan, Nathan the Babylonian, and Rabbi Isaac) are mentioned rarely in the Sifre; and even then their names are evidently later additions. Many passages quoted as being anonymous correspond with Rabbi Akiva's views.