Magellan and Faleiro were ordered to record every landfall and landmark they attained, and if they came across any inhabited lands, they were to “try and ascertain if there is anything in that land that will be to our interest.” They were also to treat humanely any indigenous peoples they happen to find, if only to make it possible for the fleet to assure its supply of food and water. Magellan could seize any Arabs he found in the Portuguese hemisphere—an implicit admission that he might violate the Treaty of Tordesillas, after all—and, if he wished, sell them for slaves.