Om kham brahma - Space and Brahman

Think of a rectangular box.

Fill it with marbles. 

There will be some space left over, in between the marbles, and between the sides of the box and the marbles.

The space occupied by all the marbles put together - think of it as immanent space. The space of the entire box - of all the marbles and the spaces outside them - think of it as transcendent space.

Now let the box and the marbles dissolve into mere outlines. The box-space and the marbles-space are unaffected and they can still be traced.

Now let them dissolve completely. Both spaces are now indistinguishable from each other or the surrounding space.

Imagine, if possible, physical space dissolving into the idea of space.

NOTES

1. This is an analogy of laya yoga progression, from sthūla to kāraṇa śarīra.
   
2. These are also some implications of "om kham brahma" - "Om space [is] Brahma[n]" (Br.Up. khila kāṇḍa V.1.i) when space is used as an analogy for Brahman as consciousness.