Reply To: A rebbe iz Atzmus uMahus vos hot zich areingeshtelt in a guf

There’s also the maamar of the Zohar that the Rebbe quotes in the same sicha “the face of the Master is the face of Rabi Shimon bar Yochai.” Same idea. That the tzaddik is so nullified before Hashem that Hashem shines and is expressed through him.