There are, however, some exceptions to the rule. Sifre 230 likewise contradicts Shimon bar Yochai's view, according to Kil'ayim 7:7. But, since it has not been claimed that the Sifre to Deuteronomy represents Shimon bar Yochai's midrash in its original form, these few exceptions prove nothing. The editor certainly drew upon other midrashic works besides Shimon bar Yochai's midrash, especially upon that of Rabbi Ishmael, as appears from a comparison with the Mekhilta to Deuteronomy, as well as from the fact that several passages introduced by תנא ר"י occur in the Sifre.