then the two parted , but not before the old man had commissioned dick to get him other good horses at the same price . the only stipulation he made being that dick should always bring them to the same spot , after dark , and that he should always come alone . and , as time went on , the horse - dealer found that he had indeed met a good customer . for , whenever he came across a suitable horse , he had only to lead it over bowden moor after dark . he was sure to meet the mysterious , white - headed stranger , who always paid him for the animal in old - fashioned golden pieces . and he might have been selling horses to him yet , for aught i know , had it not been for his one failing .
the only stipulation he made being that dick should always bring them to the same spot , after dark , and that he should always come alone .
what was the stipulation that the stranger made ?
what was the stipulation that the stranger made ?