The atmosphere is charged with magnetism, harmony, and peace which are emitted by the illuminated souls present. The Shaikh, the teacher, sits in the midst, and the other Sufis sit around him, and invoke one after the other the sacred names of God, and repeat suras of the Qur'an turn by turn. This is an introduction which tunes the heart of each one present to its proper pitch, the hearts that are already prepared by Zikr, the esoteric contemplation.