The most famous of those edicts was the so-called Sakoku Edict of 1635. It contained the main restrictions introduced by Iemitsu. With it, he forbade every Japanese ship and person to travel to another country, or to return to Japanese shores. The punishment for violation was death. The edict offered lavish gifts and awards for anyone who could provide information about priests and their followers who secretly practiced and spread their religion across the country. Furthermore, every newly arrived ship was required to be thoroughly examined for Catholic priests and followers. The document pays extremely close attention to every detail regarding incoming foreign ships. For example, merchants coming from abroad had to submit a list of the goods they were bringing with them before being granted permission to trade. Additional provisions specified details of the timing and logistics of trade. For example, one clause declares that the "date of departure homeward for foreign ships shall not be later than the twentieth day of the ninth month". In addition to this, Iemitsu forbade alterations of the set price for raw silk and thus made sure that competition between trading cities was brought to a minimum.