At the outset of this event, men don two sheets  of white and it includes drinking water from the Well of Zamzam.
At the end of this event, women cut off a single lock of hair, and it is followed by the  slaughter of an animal for the Feast of Sacrifice. At the outset of this event, men don two sheets  of white and it includes drinking water from the Well of Zamzam. Participants of this event stay  on Mount Arafat and indulge in "Stoning the Devil" in Mina, and an important part of this event  is walking seven times around the Kaaba in a certain Arabian city. For 10 points, name this pillar  of Islam that requires adherents to pilgrimage to Mecca.
At the end of this event, women cut off a single lock of hair, and it is followed by the  slaughter of an animal for the Feast of Sacrifice.
The Hajj