Rashi on Deuteronomy 23:5/רש"י על דברים כ״ג:ה׳

1על דבר may be translated BECAUSE OF THE WORD — i.e. because of the advice which they gave you in order to entice you into sin (Sifrei Devarim 250:1).

2בדרך IN THE WAY — when you were in a state of exhaustion (Sifrei Devarim 250:2).