It is said that in one of the distant cities of Khwarazm there was a merchant of much wealth and property whose name was ‘Abd al-Malik. He was always trying to find ways to make more money, so he frequented the gatherings of the learned men as well as those of the poor. One day he thought: “I have been engaged in many kinds of business in different parts of the world, but now I am going to follow the Qur’anic precept”: HE WHO DOES A GOOD DEED SHALL BE REWARDED TENFOLD. Having decided upon this, he proceeded to carry out his decision. Whatever wealth he possessed he distributed for charity. Whatever riches he had he gave as alms to…