There are five pillars of practice in Islam, all must be undertaken with the best of effort in order to be considered a true Muslim : 1-Faith or belief in the Oneness of God and the finality of the prophethood of Muhammad
2-Establishment of the daily prayers
3-Concern for and also giving to the needy
4-Fasting Ramadan
5-The pilgrimage to Makkah if oneself is financially and physically able.