Likutei Sichos, vol 27, Kedoshim 1, Rabbi Chaim Wolosow
https://www.torahrecordings.com/likutei-sichos/027/010_001 A Rashi sicha on Lifnei Iver Lo Sitein Michshol. The Rebbe explains why Rashi interprets the verse as giving harmful advice rather than literally placing an obstacle before a blind person. The deeper lesson: Torah demands not only avoiding harm, but actively seeking another Jew’s true benefit.