ADORATION. The acts and postures by which the Muslims express adoration at the time of prayer are similar to those used by the ancient Jews (vide Smith’s Dictionary of the Bible, in loco), and consist of Ruku or the inclination of the body, the hands being placed on the knees; and Sujud, or prostration upon the earth, the forehead touching the ground. [PRAYER] The adoration of the black stone at Makkah forms an important feature in the ceremonies of the pilgrimage. [HAJJ.]
Based on Hughes, Dictionary of Islam