sentences:  28b; Niddah 14b).An ordinance is also extant which dates from the time called the period of religious persecution ("shemad").When Hadrian issued his decree forbidding the Jews to observe their religion, the teachers, including R. Akiba, R. Tarfon, and R. Jose the Galilean, met in council and agreed that during the time of the persecution the Law might be transgressed in all respects, except as regarded the commands relating to idolatry, chastity, and morality, although this regulation was observed only superficially and only when necessary in order to deceive the Roman spies.