Zakat, fasting, Hajj, and pronouncing there is no god but God and Muhammad is the Messenger of God, so I took care of these five because they are among the principles of Islam upon which Islam is built, and they are like the pillars of the house. Faith is the essence of the house, its assembly, and the door of the house from which one enters it. This door has two doors, and they are the pronouncement of the two testimonies. The pillars of the house are four, which are Prayer, zakat, fasting, and Hajj