Mandukya_Upanishad

The third foot of the Ātman the third phase of itsanalysis, is deep sleep, where all perceptions and cognitionsconverge into a single mode of the mind – ekībhūtah. Itbecomes a mass of consciousness, which is not projectedoutside – prājñana-ghanah. There is no modification of themind, and so there is no external consciousness. We are notaware of the world outside in the state of sleep because ofthe absence of vṛittis, or psychoses, of the mind. Only whenthe mind becomes extrovert can it have consciousness ofthe outer world, whether in dream or in waking. But, thereis no agitation of the mind, of that nature, in sleep. It is as ifthere is a homogeneous mass of all perceptions, where allthe samskāras, vāsanas, commingle into a single mode, orcondition, instead of there being many cognitive psychoses.Ānandamayo ānandabhuk cetomukhah prājñah: It is allbliss. The happiness of deep sleep is greater than all otherforms of happiness or pleasure born of sense-contact. It isfilled with ānanda, bliss, delight, satisfaction. Even a kingcannot be happy if he does not have sleep for a week. Allthe worlds may be given to you, but if you will not beallowed to sleep, you would rather say, “Let me sleep. I donot want any world. You take your kingdom back, all yourempire. You allow me to sleep peacefully.” An empirecannot give you that happiness, the power which you mayseem to have over the world cannot give you thatsatisfaction, which you have while you are alone in deepsleep, unbefriended, unprotected, unseen, uncognised,unpossessed of anything. While you are possessed of somany things in the world, with all the retinue of a kingdom,with the power that you wield in society, you have a87