There (meaning Zohar, section 2) on page 27a, at the end of the page, it is written like this: Rebbi Elazar said from the upper right side go out 13 deep upper wells, etc, 499 lakes and a half from this side and 499 from here, etc. This matter is explanned by me in Drush HaYichudim, and check there, for there I have explained it, and it requires examination there. And the matter is that he is speaking about the aspect of the connectino of Zeir Anpin and Nukveh with them being in the secret of back to back, and see in the Idra by Naso on page 132a, "in that first world, which is thousands of thousands, myriads of myriads" etc. And there we explained the matter of those thousand and what their matter is and how they are brought down and how they spread from the two upper shoulders, for shoulder in gematria is 500, and two shoulders is one thousand, and afterwards from these shoulders were made two crowns called Chesed and Gevurah, and one shoulder which is Chesed is drawn down and it is given to Zeir Anpin. And the second shoulder which is called Gevurah is drawn down to Nukva of Zeir Anpin and therefore it is found that the two shoulders of Zeir Anpin are really only one shoulder, and the two shoulders of Nukva are also only one shoulder, and therefore the length fo Zeir Anpin is 500 years. And thus is the length of Nukva. Therefore when the two of them connected together back to back, there was only one wall separating between them, half of its width to this, and half of its width to that. Therefore for this one there was 499 and a half from this side, and 499 and a half from this side, for the wall that is between them is divided, half to this and half to that, but after the female is separated from his back, then from the one wall, two walls are made for each, and then it is 500 complete for Zeir Anpin against the shoulder of Chesed which is in gematria 500, and 500 complete for his Nukva against the shoulder of Gevurah. And behold this middle wall that is made now together as one, in it is the secret of the backsides. Therefore the judgments are drawn down from it. Therefore his head is red like a rose in the secret of the redness of judgment. One also needs to know that the entire matter is in the aspect of Netzach and Hod of Zeir Anpin which against them stands his Nukva back to back, and you already knew that the backsides are the aspect of the judgments. And behold there are here Netzach, Hod, and Yesod of Zeir Anpin, and Netzach, Hod, and Yesod of his Nukva, and it is all one back side from those in its place and that is in the secret of the thousand rivers and another 13 like we will xplain, with G-d's help. And we will explain the aspect of Netzach, Hod, and Yesod of Zeir Anpin and from them we will connect to the Netzach, Hod, and Yesod of his Nukva, for there it is also on the way of these.
Behold, you already know that Netzach and Hod and Yesod are called Tzeva'ot, and the name Tzeva'ot in Gematria is 499, and therefore (you know) how Netzach Hod and Yesod are in gematria 499, and the Netzach Hod and Yesod of the male is 499 from here, and the Netzach Hod and Yesod of Nukva from here are another 499, and because they are connected back to back, they are two times Tzeva'ot, which is Netzach Hod and Yesod of the male and Netzach Hod and Yesod of the female, and there is nothing between them but one wall which connects them, and the wall is divided, half to this name Tzeva'ot, and half to this one, and therefore it is 499 and a half from here and 499 and a half from here which is 1000 minus 1. And in a way that they are 499 and 499, which are Tzeva't of Netzach Hod and Yesod of the male and Tzeva'ot of Netzach Hod and Yesod of Nukva. And there is between them 1 wall which divides between these two Tzeva'ot, and that is the wall divided in half that is mentioned, half from this side and half from that side. You also need to know that being that these two Tzeva'ot are connected back to back by this wall that divides between them, there is also in the middle of these two Tzevao't, which is the middle of NH"Y of Zeir Anpin and NH"Y of Nukva, there is between them in the middle another 13 rivers, six and a half from this side and six and a half from that side. And therefore it is left that they divide to each back, 506 and a half from here and 506 and a half from there, and that is the secret of the two names ABGYT"Tz, the first name of the 42 letter name as is known. And that name is equal in gematria to 506 to teach about these 13 rivers that were mentioned which are in the middle between the back to back. And therefore the 2 letters Yud Gimel are put in the middle of this name, A"B from here and T"Tz from here, and 13 in the middle, to teach about the 13 rivers which are in the middle as was mentioned. And it is already known that the 42 letter name is in Gevurah which is the aspect of the back sides which are the secret of judgments and thus the matter is in her NH"Y, to other backsides in these, and all the klipot attach in the aspect of these backsides.