midnight
By that time , I shall be asleep . Put the vial in this pocket of my _ caftán _ ; open all the doors and windows , and tell my servant to leave them so , but not to admit any one . Then you can leave me ; I shall sleep very comfortably . Come back and wake me a little before midnight . You will wake me easily by lifting my head and pressing one of my hands . Remember , if you should forget to wake me , and I should still be asleep at one o'clock , I should never open my eyes again , and should be dead before morning . Do as I tell you , for friendship 's sake , and when I wake I shall bathe and sleep naturally the rest of the night . ''