Rutherford Hayes actually said...
I, Rutherford B. Hayes, President of the United States, do admonish and warn all such persons so intending or preparing to remove upon said lands or into said Territory without permission of the proper agent of the Indian Department against any attempt to so remove or settle upon any of the lands of said Territory;
Context
Proclamation 243—Warning Against Unauthorized Settlement in the Indian Territory
04/25/1879