A Sufi adherent in Omdurman, Sudan, whirls in prayer at the Friday dhikr or zikr. The word literally means "remembrance", and is a Sufi practice in which the names of God or Qu’ranic phrases are chanted as a means of prayer and meditation, accompanied by rhythmic dancing. Each Sufi sect, or tariqa, has its own version of dhikr. Adherents of this Qadriyya sect at the mosque of Hamad el-Nil whirl rapidly..