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The lecturer may have been referring to the Rambam in Mamrim 1:3 דברי הקבלה, אין בהן מחלוקת לעולם; וכל דבר שתמצא בו מחלוקת, בידוע שאינו קבלה ממשה רבנו Words of "kabbala" are never argued about; anything about which there is an argument can be known that it was not received from Moshe T...