If you were looking for Episode 37 of a different Dragon Ball series, the stories are quite different:
Murasaki uses classic ninja tools like makibishi (spikes) and smoke bombs. Goku accidentally steps on the spikes and has to run back to find sandals, but he quickly turns the momentum by breaking Murasaki’s sword with his Power Pole . Dragon Ball (Dub) Episode 37
In the English dub of the original Dragon Ball (titled " Ninja Murasaki is Coming! "), Goku’s ascent of the Red Ribbon Army’s takes a turn for the bizarre as he reaches the fourth floor. The Duel at Muscle Tower If you were looking for Episode 37 of