sentences:  However, the Talmud states that in exceptional cases, the Jewish sages had the authority make a gezeirah even if it would "uproot a matter from the Torah".In Talmudic and classical halakhic literature, this authority refers to the authority to prohibit some things that would otherwise be biblically sanctioned ("shev v'al ta'aseh").Rabbis may rule that a Torah mitzvah should not be performed, e.g.