The Connection of the Soul to the Body
Imaam Ibnul-Qayyim al-Jawziyyah (d.751H)
Source : Kitaabur-Rooh (p. 44)
The soul (ar-rooh) is connected to the body in five different ways, to which different rules apply.
 Its connection to the body as a fetus in his mother’s womb.
 Its connection to the body after a person is born.
 Its connection to the body when a person is asleep, when the soul is connected in one way and separated from it in another way.
 Its connection to the body in al-Barzakh (the period between a person’s death and the Day of Resurrection), when it has departed from the body and separated from it, but is not separated completely in such a way that there is no connection at all. We have mentioned at the beginning of this reply that there are ahaadeeth and reports which indicate that the soul is returned to the body when somebody sends the greeting of salaam to a deceased person. This returning is of a special nature which does not mean that the life is restored to the body before the Day of Resurrection.
 Its connection to the body on the Day when bodies will be resurrected. This is the most perfect type of connection to the body, and has no comparison to the previous types, because after that the body will never die, sleep or have anything wrong with it.When a person is asleep, his soul is in his body and he is alive, although his being alive is not the same as that of a person who is awake, for sleep is comparable to death. Similarly, when a dead person’s soul is returned to his body (when the greeting is sent upon him), he is in a state between one who is alive and one who is dead, whose soul is not restored to his body. This is like the case of a sleeping person who is in a state between life and death. We hope that this will dispel a lot of your confusion.
Imaam ibn al-Qayyim al-Jawziyyah (d.751 H), rahimahullaah 1
From al-Istiqaamah magazine Shawwal 1418H/ February 1998
Allaah - the Most High - said:
"O you who believe! Remember Allaah and remember Him a lot." [Soorah al-Ahzaab 33:4I].
"Those men and women who remember Allaah a lot." [Soorah al-Ahzaab 33:35].
"So when you have finished the rights of your Pilgrimage, then remember Allaah as you remember your fore-father, or with more intense remembrance." [Soorah al-Baqarah 2:200].
These verses contain a command to remember Allaah intensely and abundantly, since the worshipper is in dire need of [remembering Allaah] and cannot do without it even for a twinkling of an eye. This is because every moment that a person does not spend in the dhikr (remembrance) of Allaah will not be of any benefit to him. Rather, the harm entailed in being neglectful of the dhikr of Allaah is far greater than any benefits that can be gained. One of the 'aarifeen (those who are knowledgeable about Allaah) said:"If a person were to spend such and such number of years engaged [in the dhikr of Allaah], then he turns away from it for just a moment, what he will lose is far greater than whatever he has already gained."
Al-Bayhaqee relates from 'Aaishah radiallaahu 'anhaa that the Prophet sallallaahu 'alayhi wa sallam said: "There is no time in which the son of Aadam does not remember AIIaah in it, except that it will be a source of regret for him on the Day of Judgement" 2
Mu'aadh ibn jabal radiallaahu 'anhu relates that the Prophet sallallaahu 'alayhi wa sallam said: "The people of Paradise will not have any regrets except for those moments in which they were not engaged in the dhikr (remembrance) of Allaah." 3
Mu'aadh ibn Jabal also relates that Allaah's Messenger sallallaahu 'alayhi wa sallam was asked: What action is the most beloved to Allaah? So he replied: "That you continue to keep your tongue moist with the dhikr of Allaah, until you die." 4
POLISHING THE HEART
Abu Dardaa radiallaahu 'anhu said:"For everything there is a polish and the polish for the heart is the dhikr of Allaah".
Al-Bayhaqee relates from Ibn 'Umar radiallaahu 'anhu that AlIaah's Messenger sallallaahu 'alayhi wa sallam said: "For everything there is a polish, and the polish for the hearts is the dhikr (remembrance) of Allaah. There is nothing more potent in saving a person from the punishment of Allaah than the dhikr of Allaah." It was said: Not even Jihaad in the path of Allaah. So he replied: "Not even if you were to continue striking with your sword until it breaks."5