Hadith.128 - Abu Al-Hasan Imam Ali ibn Musa Ar-Ridha عليه السلام wrote to Muhammad ibn Sinan in response to his questions: "The reason for wudu (ablution), for which it has become obligatory for a servant to wash the face and arms, and to wipe the head and feet, is to prepare to stand before Allah سبحانه وتعالى Almighty, to face Him with one’s visible limbs, and to encounter the noble recording angels with them. The face is washed for the act of prostration and submission. The hands are washed so that one may turn them over in prayer, supplicating with them, expressing hope and reverence, and focusing in worship. The head and feet are wiped because they are exposed, facing all conditions, and do not possess the same level of humility and dedication as the face and arms."