Selected Sayings of The Holy Prophet of Islam — Page 56
Envy 79. Abdullah bin Omar, God be pleased with him, says that the Holy Prophet, peace and blessings of Allah be upon him, stated: "Do not be jealous of each other. Do not inflate prices. Do not hate each other. Do not turn your back on each other. Do not make an offer while two parties are engaged in bargaining. Be true servants of God by becoming brothers to one another. " "Muslims are brothers to (other) Muslims. One should not transgress against the other; he should not treat the other with disdain, nor should he forsake him. " "Here dwells taqwa (the fear of God)'' said the Holy Prophet and he pointed to his chest three times. Then he said: 'It is enough to ruin one to disdain one's brother Muslim. The blood, the property and the honour of a Muslim is inviolable to another Muslim. " (Muslim) 57