Greater Tzaddikim Before Moshiach

When his talmidim saw that Rav Aharon's end was near, they began to cry.

"Why are you crying?" Rav Aharon asked them. "The end of every person is death."

"How can we not cry when our Rebbe is leaving us?" they answered. "We will be left a flock without a shepherd. The other tzaddikim of the generation are more hidden in their avodas Hashem, but our Rebbe's derech in avodas Hashem is the one we have become accustomed to."

Rav Aharon said, "Know that before Moshiach comes there will be tzaddikim who will be greater than me, and through what they do they will bring about more yichudim (spiritual unifications) than we accomplished, even with our learning and davening."