In the Urdu language the fleshy meat, (the heart) is known as dil, and in Arabic it is called fawad. The spiritual entity that is next to the heart is the Qalb and according to a Prophetic statement the heart and the Qalb are two separate entities.
Our solar system is the physical human sphere. There are other realms and spheres, for example the realm of the angels, the realm of the throne of God, the realm of the soul, the realm of the secrets, the realm of unification and the realm of the essence of God. These spheres and life forms inhabiting these spheres have existed before the eruption of the ball of fire, our Sun, which created our solar system. Ordinary angels were created alongside the creation of the souls when God commanded "Be" but the Archangels and the spiritual entities (which are placed inside the human body at birth) have existed in these realms before the formation of our solar system.
Many planets in our solar system were inhabited but subsequently these life forms became extinct. The remaining planets and their inhabitants are awaiting their destruction. The Archangels and the spiritual entities (of the human body) were created seventy thousand years before the command "Be."
Of these spiritual entities God placed the Qalb in the realm of love. It is with this that a human being is able to become connected with God. The Qalb acts like a telephone operator between God and the human being. A human being receives guidance and inspiration through it. Whereas the worship and the meditation done by the spiritual entities themselves can reach the highest realm, the Throne of God, with the aid of the Qalb. The Qalb itself, however cannot travel beyond the realm of the angels, as its place of origin is the Khuld, the lowest heaven in the realm of the angels.
The Qalb’s meditation is from within and its vibrating rosary is within the human skeleton (the heartbeat). People that failed to achieve this meditation of the Qalb in this lifetime will be regretful, even though they may be in paradise. As God has stated regarding those who will go to paradise, that do they, the inhabitants of paradise think that they will be equal to those who are elevated (reached higher realms by practicing the spiritual disciplines and becoming illuminated). As those that have achieved the meditation of the Qalb, they will enjoy its pleasures even in paradise when their Qalb will be vibrating with the Name of God. After death physical worship ceases to exist and the people whose Qalb and spiritual entities are not strengthened and illuminated with the light of God are afflicted and distressed in their graves and their spiritual entities waste away. Whereas the illuminated and strengthened spiritual entities will go to the realm where the righteous will wait before the final judgement. After the day of judgement a second body will be given, the illuminated spiritual entities along with the human soul will enter that body. The people that taught their spiritual entities, meditation, whereby the entities chanted the Name of God Allah in this life time will find that the spiritual entities will continue with this meditation even in the hereafter. Such people will continue to be elevated and exalted in the hereafter.