Question: is it dhikr or zikr?
Answer: Dhikr, also spelled Zikr, (Arabic: “reminding oneself,” or “mention”), ritual prayer or litany practiced by Muslim mystics (Ṣūfīs) for the purpose of glorifying God and achieving spiritual perfection. ... The dhikr, like fikr (meditation), is a method the Ṣūfī may use in his striving to achieve oneness with God.