Dhikr

Dhikr (or Zikr, "Remembrance ", "pronouncement", "invocation"; Arabic: ذکر‎ ḏikr, plural أذكار ʾaḏkār, ), is an Islamic devotional act, typically involving the recitation—mostly silently—of the Names of God, and of supplications taken from hadith texts and Qur'anic verses, according to Sunni Islam. Essentially, the practice of dhikr is a form of prayer in which the Muslim will express his or her remembrance of God either within or overtly; this may come in the form of recitation or simply always remembering God in one’s heart. The word dhikr is commonly translated as "remembrance" or "invocation".

Read more about Dhikr:  Origins, Methods, Phrases Read During Dhikr, Ahadith Mentioning Virtues/importance of Dhikr, Verses of The Qur'an Recommending Dhikr, Sufi View, Dhikr Beads