Narrated from Sayyiduna Ziyad bin Naeem Khudrami that the Messenger of Allah, peace and blessings be upon him, said: Allah Almighty has made four things obligatory in Islam. Whoever acts upon three of them, it will not suffice him until he acts upon all of them. (These four things are:) Prayer, Zakat, fasting in the month of Ramadan, and Hajj to the House of Allah.