AyinBase / Ayin Beis with R' Paltiel, Kislev 5776
Page 27 of pamphlet – (At third line from top of the page. Line starts: 'hametziut...'). Page 20 of the book. For text see below.
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We are talking of the letters that precede the tzimtzum.
They can contain the infinite light.
The letters do not have an element of being 'objects/things'. They are totally 'one with the light'.
These letters are not at the level of metziut/thinginess, but they are vessels/keilim for the light.
There is no process or extra step to get the lights to correlate to the vessels.