Serene's fame spread as far as Spain, and the Jews of that country resolved to abandon their property and to place themselves under the leadership of the pseudo-Messiah. Hardly ten years after the Jews of Spain had been delivered from the yoke of the Visigoths by the conquests of the Mahometans, they, or at least many of them, were desirous of again abandoning their newly-acquired fatherland. It appears that they were dissatisfied with the rule and administration of the Mahometan governors. As they had rendered signal services to the Arabs in the conquest of the Peninsula, they probably expected particular consideration and distinction, and instead of this they were impoverished equally with the Christians. Serene's fate was miserable, as indeed he deserved. He was captured and brought before the Caliph Yezid, Omar II's successor, who put an end to his Messianic pretensions by propounding insidious questions to him, which he was unable to answer. Serene is said, however, to have denied before the Caliph that he had had any serious designs, but that he only intended to make game of the Jews; whereupon the Caliph handed him over to the Jews for punishment. Many of his adherents, repenting of their easy credulity, desired to rejoin the communities from which they had severed themselves by infringement of the Talmudical ordinances. The Syrian communities were doubtful, however, whether they ought to re-admit their repentant brethren into their midst, or whether they ought not to be treated as proselytes. They referred the matter, therefore, to Natronaï ben Nehemiah, surnamed Mar-Yanka, the principal of the college at Pumbeditha, and successor of Mar-Raba (719-730). Natronaï's decision concerning the reception of Serene's adherents was conceived in a liberal spirit, and ran as follows: According to the laws of the Talmud, there is nothing to prevent them from being re-admitted by the communities and being treated as Jews; but they are to declare openly in the synagogues their sorrow and repentance, and to promise that their future conduct shall be pious and in accordance with the precepts of the Talmud, and in addition they are to suffer the punishment of flogging. At that time there were also other apostates, who went so far as to disregard the Biblical precepts concerning the Sabbath, the ritual for slaughtering cattle, the eating of blood, and the intermarrying of near relations. It is not known, however, in what country these people lived. Without declaring either for Christianity or Islam, they had entirely severed their connection with Judaism. When some of these sought re-admission into the fold of Judaism, Natronaï was again asked for his opinion. He said, "It is better to take them under the wings of God than to cast them out."