Praise be to Allaah.
The
earnings a trader may make are not limited by sharee’ah, but it is not
permissible for a Muslim to cheat those who buy from him and to sell his
goods at a price that differs from the going rate in the marketplace.
Islam teaches Muslims not to seek a huge profit, but to be easygoing when
buying and selling, because the Prophet
(peace and blessings of
Allaah be upon him) urged an easygoing and tolerant attitude in dealings
with others.