Abu Huraira (may Allah be pleased with him) narrates that the Messenger of Allah (peace and blessings of Allah be upon him) said: "A Muslim is the brother of a Muslim; he does not oppress him, nor does he abandon him helpless, nor does he despise him. Taqwa is here," and he pointed to his chest three times. "It is enough evil for a man that he despises his Muslim brother. The blood, wealth, and honor of every Muslim are forbidden to another Muslim." Narrated by Muslim.