As it is difficult for the mind to see independently of the body, it is more difficult for the soul to see independently of the mind. Therefore the Sufi tries to make his mind independent of the body, and his soul independent of mind and body. In order to accomplish this different concentrations and practices are given. It is like effacing the external form from the mind, and erasing from the soul the form of the mind. It is this experience which is called Saf .