PDF is cover page and page 87 with a yellow highlight of key text.
The founder of dispensationalism — Clarence Larkin began the movement by saying there is nothing for a modern Christian to worry about obeying from the Sermon on the Mount. His text, still cited today among dispensationalists, is Dispensational Truth (Philadelphia: Larkin, 1920 -Fortieth Printing). Based on dispensational logic, Larkin explains Jesus’ teachings in the Sermon on the Mount
“have no application to the Christian, but only to those who are under the Law, and therefore must apply to another Dispensation than this.” (Id., at 87.) [JWOS Sermon on the Mount.]