Wuḍūʾ (الوضوء ALA-LC wʊˈdʕuːʔ) is the Islamic procedure for cleansing parts of the body, a type of ritual purification, or ablution. The 4 Fardh (Mandatory) acts of Wudu are: washing the face, then the arms, then wiping the head, then washing or wiping the feet, and doing these in order, without any big breaks between them. Wudu is an important part of ritual purity in Islam. It is governed by fiqh (Islamic jurisprudence), which specifies rules concerning hygiene and defines the rituals that constitute it. It is typically performed before prayers (salah or salat). Activities that invalidate wudu include urination, defecation, flatulence, deep sleep, light bleeding (depending on madhhab), menstruation, postpartum and sexual intercourse. Wudu is often translated as 'partial ablution', as opposed to ghusl as 'full ablution' where the whole body is washed. It also contrasts with tayammum ('dry ablution'), which uses sand or dust in place of water, principally due to water scarcity or other harmful effects on the person. Purification of the body and clothes is called taharah. Qur'an 2:222 says The Islamic prophet Muhammad said that "Cleanliness is half of faith." Wudu by itself is a mustahabb (recommendable act) in Islamic rites, but it becomes obligatory in special conditions such as daily prayers (salah) and tawaf and worship. Wudu in Hadith Abu Hurairah, in reference to the Day of Resurrection, reported that Muhammad, when asked if he would be able to recognize Muslims, said, "Yes, you would have a mark which other people will not have. You would come to me with a white blaze on your foreheads and white marks on your feet because of the traces of ablution." Abu Hurayra said, "I have heard prophet (may peace be upon him) say, "In a believer adornment would reach the places where ablution reaches." Uthman stated that Muhammad said, "He who performed ablution well, his sins would come out from his body, even coming out from under his nails.