According to Sufism, the universe is like a circle (chakra) in a dimension, meaning that everything that exists in this universe is contained in a circle (chakra). This enclosure of the cosmos in a single circle (chakra) is like a microfiche that contains all the pictures and facts in a small space. In the same sense, in this cosmic circle (chakra) all that exists is marked or contained. When this circle (chakra) activates, it extends into the outward universe. The other analogy would be that of a seed of a tree. That tiny seed, which is nothing but a circle, contains its entire history, leaves, flowers, fruits, branches and the future generation of that tree. That same seed eventually becomes the tree. In Sufism, that circle that contains the entire cosmos is referred as qalb (heart), fawwad, or nafs vahida.

The method of entering the depth of that circle (chakra) through Muraqaba of Heart is as follows:

By following the directions of your spiritual master (murshid) close your eyes and look inside your heart and through the imaginative vision, see that there is a black circle (chakra) in your heart. After some time the image will form. At that point, let your mind enter the depth of that circle (chakra). What you see inside the realm of that circle (chakra) is proportional to the depth that occurs.