Part 13 · Chapter 33

And thus is explained how the two heads, which are the Keter and Hochma in it, are included in three real heads, and they are: Keter, the upper head; Avira, the second head; and Mocha Stima'ah, the third head. Besides the head that is not known, called Atik Yomin. For although in the Idra the Keter and Hochma of AA are called by the aspect of only two heads, nevertheless they are three real heads, of which the RDL"A is not included.