رسولُ اللَّهِ صلى اللَّه عليه وآله :  مَن قَرأَ (ألْهاكُمُ التَّكاثُرُ) عِندَ مَنامِهِ وُقِيَ فِتنَةَ القَبرِ . It is not the possession of our being. During sleep, certain parts of man's inner constitution wing their way into the spaces of the solar system. Kindly verify the following Hadith: ‘Sleep is the brother of death’ Answer. The Prophet (SAWA) said, 'Sleep is the brother of death, and the people of Heaven do not die.' and dies in his sleep is regarded by Allah as a martyr.'. Sleep and death are brothers, according to the old Greek proverb. The body sleeps because the personal man is no longer there. When a man dies, it is exactly like falling into a very deep sleep, utter, sweet unconsciousness, except that the vital cord is snapped and then, instantaneously, like the sounding of a soft golden note, the soul is free.

Ilal al-Shara'i, p. 589, no.

Precisely as in death, the consciousness during sleep becomes, following upon a brief period of complete unconsciousness, the seat or active focus of forms of inner mental activity which we call dreams. The instant of death always brings for a period the unutterable peace of perfect unconsciousness, which is like gliding into a beginning, a foretaste as it were, of the devachanic bliss, just as the careful observer will find to be his experience when falling to sleep. and dies in his sleep is regarded by Allah as a martyr.'
Therefore, while all human beings have dreams which are more or less alike, everyone has dreams of his or her own characteristically unique type. Truly prophetic dreams do not occur in the devachan, but can do so during sleep because they arise in the stored knowledge of the reincarnating ego, which latter attempts to impress the sleeping brain with a 'radiation' of prophetic foresight. The personal ego goes into oblivion and its consciousness is withdrawn into the spiritual part where it rests and has temporary peace.

Fouché, Joseph (1763-1820): "Death is an eternal sleep.

Amali al-Saduq, p. 22, no. إيّاكُم وكَثرَةَ النَّومِ ؛ فإنَّ كَثرَةَ النَّومِ يَدَعُ صاحِبَهُ فَقيراً يَومَ القِيامَةِ . The cause is the same: mental deposits or thought impulses arising during the life of a man, and so affecting his mental structure that they automatically begin to act upon his consciousness. However, they are not merely brothers, born of the same fabric of human consciousness, but are in all verity one, identical. رسولُ اللَّهِ صلى اللَّه عليه وآله :  مَن نامَ علَى الوُضوءِ إن أدرَكَهُ المَوتُ في لَيلِهِ فهُو عِندَ اللَّهِ شَهيدٌ . مَن قَرأَ (ألْهاكُمُ التَّكاثُرُ) عِندَ مَنامِهِ وُقِيَ فِتنَةَ القَبرِ . Therefore, while all human beings have dreams which are more or less alike, everyone has dreams of his or her own characteristically unique type. What happens to a man during sleep is an adumbration of what will happen to him at death. The vital thread of life and consciousness still vibrates in even the physical brain of a man during sleep, producing dreams, some that delight him and others that harass and perplex him.

Truly prophetic dreams do not occur in the devachan, but can do so during sleep because they arise in the stored knowledge of the reincarnating ego, which latter attempts to impress the sleeping brain with a "radiation" of prophetic foresight. Majma’uz Zawaid, vol. Thus, neither in the devachan nor when a man is dreaming at night does he originate any positive or inventive courses of action, although it is occasionally true that the dreams of a man, by reaction on the mind, may consciously or unconsciously somewhat influence the thoughts of the waking man.

Thus it is that initiation comprises both sleep and death and uses these functions of consciousness in order to free the 'inner man' for the marvelous experience on inner planes that initiation brings about. . 10 pg. But time to pure consciousness does not exist; time pertains to material existence. Hence the extreme importance of having one's mind in order and peaceful before going to sleep — or before dying; to refuse entrance to any thoughts of dislike, hatred or evil. Losing a spouse is often a very big factor in experiencing sleep disturbances, this form of loss may, in fact, be the most likely to cause insomnia and sleep loss. Of these forces, the first kind is the solar, lunar, and planetary influences under which an individual is born; and the second is the automatic reaction to the events and experiences that had occurred during the waking state. A quotation is a statement taken out of its context. The Prophet (SAWA) said, 'None of you should go to sleep with unclean hands, for if he does and is stricken with mental derangement from Satan [as a result] then he has only himself to blame.' In another hadith its reported that reading Surah Al-Mulk before sleep will cover the body like the wings of a bird and protect its reader from the turmoils of the grave. Sleep is largely an automatic functioning of the human consciousness; death is the same, but in immensely greater degree, and is a necessary habit of the consciousness in order that it may gain for the psychological part of the constitution a resting and an assimilation of experience. . As the great Pythagoras taught in the verses attributed to him by his disciple Lysis, which form a part of the so-called Golden Verses of Pythagoras: (From Fountain-Source of Occultism by G. de Purucker.

As is the generation of leaves, so is that of humanity.

It matters not at all how we die: whether by age, by disease, or by violence. الاختصاص : 218 . But time to pure consciousness does not exist; time pertains to material existence.

Its mind, even its brain, are not yet set or fully formed; nevertheless on occasion it will have frightening dreams, but these are usually caused by automatic psychologic reactions in the child's sleeping brain to some disturbance that it has experienced when awake.

The Prophet (SAWA) said, 'When any of you retires to his bed ... he should say: O Allah, if You take my soul while I am sleeping then forgive it, and if You send it back to me, then protect it as You protect Your righteous servants.'
Kanz al-Ummal, no.

Indeed, one may go still farther and say that sleep and death and all the various processes and realizations of initiation are but different phases or operations of consciousness, varied forms of the same fundamental thing. However, they are not merely brothers, born of the same fabric of human consciousness, but are in all verity one, identical. The evil man, one who is so selfish, and whose imagination and feelings are so restricted and imprisoned that a kindly impulse seldom if ever enters his consciousness, feels the unfailing reaction: when he dreams, which is frequently, he is in an emotional and mental hell.