Moslems whose part in the treaty must be the most difficult and lengthy of accomplishment, and one day less than a month according to the reckoning of the Franks, who had most to gain by a speedy fulfilment of the conditions.[724] Richard presently grew uneasy as to the possibility of fulfilling the Franks’ side of the compact on the appointed day; for Philip, after formally giving the charge of his share of the prisoners to the duke of Burgundy,[725] had carried them, or at least the most important and valuable of them, away with him to Tyre and left them there in the custody of Conrad.[726] On August 5 Richard despatched envoys to Tyre to request that Conrad would at once return to Acre and bring these prisoners with him. Conrad flatly refused. Richard’s [Sidenote: _Aug. 6_] first impulse, when his envoys came back next day, was to go and bring the marquis to submission by force. But Conrad was a dangerous person to quarrel with, owing to his position as heir to the Crown, and still more because, as master of Tyre, he could stop the coming of provisions for the host; he was in fact already doing this again, as he had done in the earlier days of the siege. Hugh of Burgundy therefore undertook the task of inducing Conrad to give up the prisoners to him as the representative of their proper owner, Philip.[727] He set out for Tyre on August 8, but did not get back with the prisoners till the 12th.[728] According to the letter of the treaty, however—at least, according to the Franks’ understanding of it—the presence of all the Saracen prisoners on the 11th was not really necessary; for their release was to be conditional on, and should therefore have been preceded by, Saladin’s fulfilment of his part of the bargain. On the 11th therefore Richard called upon Saladin to do what he had promised for that day. Saladin replied that he would do so only on one of two conditions: either that the Franks should at once release the captive garrison of Acre, in which case he would give other hostages for the completion of his payments; or that the Franks should give him hostages to keep till the garrison were set free. The Franks rejected both these propositions, offering instead, in return for what was now due from the Sultan, to give a solemn oath that the prisoners should be restored to him; but this he, having no confidence in their good faith, would not accept.[729] The discussion seems to have ended for the time in a postponement of the “first term” (as Bohadin calls it) till August 20.[730]