Partie 13 · Chapitre 120

And what is said in Idra Rabba, page 128, side B: "Four hundred thousand worlds the whiteness of the skull spreads..." — it speaks only of those four ways that are at the back of the skull, from which four hundred thousand worlds spread. And it too is drawn from behind it and spreads until the head of Zeir Anpin, and there it ends — that is, up to the navel of the heart of Arich Anpin himself, which is half of the Tifferet of Arich Anpin.