בהעלותך את הנרות…(בהעלותך ח:ב)

It is the way of the world that when Yidden travel to a tzaddik, their hearts are awakened to עבודת השם with great enthusiasm and inspiration. However, once they return home, that excitement and hisorerus often begins to fade.

A true tzaddik, however, has the power to influence his chassidim that the inspiration they received should not diminish even after they leave him, but should continue to burn within them as they return home and continue serving Hashem with the same enthusiasm.