Hadith.4003 - It is narrated from Umar ibn Yazid, the seller of Sabiri, who said: I said to Abu Abdullah : "May I be your ransom! People claim that making a profit from someone in distress is forbidden and is considered usury." Imam said: "Have you ever seen anyone, whether rich or poor, buy something except out of necessity, O Umar? Indeed, 'Allah (swt) has permitted trade and forbidden usury.' So make a profit, but do not commit usury." I said: "What is usury?" Imam said: "It is exchanging dirhams for dirhams of equal amount."