This right of the poor in the wealth of the rich is called Zakat. the word " Zakat" in Arabic means both "purification" and "growth". Hence, Muslims believe that wealth will be definitely purified and grow only if they give a part of their wealth to the needy in the from of Zakat.
Highlighting business ethics in lslam, it is highly important to state that lslam recognizes the right of private ownership but regulates it with business ethics to protect it from any individual or state moral corruption. lslam allows people to sell, use or trade their property but within the rules and regulations of lslamic law.