In plain words
Like space, it is one undivided whole, within and without all things, with no form. Those who have sunk into that wondrous supreme bliss, dear one, see: they take the very form of that supreme bliss.
Word for word
O dear one, see: those immersed in the wondrous supreme bliss that is, like space, one formless whole inside and outside everything take the form of that supreme bliss.