Yes. They call themselves Muslims, adherents of Islam wherein religious concepts and practices that include the Five Pillars of Islam, the five basic concepts and acts of worship – the foundation of Muslim life – are obligatory!
The Five Pillars of Islam are:
Hajj: Pilgrimage to Mecca
The third Pillar “Zakāt” or alms-giving is the practice of charitable giving based on accumulated wealth.
The word zakāt can be defined as purification and growth because it allows an individual to achieve balance and encourages new growth. The principle of knowing that all things belong to God is essential to purification and growth.
Zakāt is obligatory for all Muslims who are able to do so. It is the personal responsibility of each Muslim to ease the economic hardship of others and to strive towards eliminating inequality.
Zakāt consists of spending a portion of one’s wealth for the benefit of the poor or needy, like debtors or travelers.
A Muslim may also donate more as an act of voluntary charity (sadaqah), rather than to achieve additional divine reward.