The study is not the main thing, but the action.

לא המדרש עיקר אלא המעשה

This saying is from Pirkei Avot (Ethics of the Fathers), a tractate of the Mishnah. It emphasizes that while learning and studying Torah are critically important, the ultimate goal is to put that learning into practice. The "action" refers to living according to the teachings of the Torah, performing mitzvot (commandments), and making a positive impact in the world through one's deeds.

The phrase teaches that knowledge alone is not sufficient; it must lead to concrete actions that reflect the values and principles learned. This underscores the importance of applying Torah teachings in daily life.