Syedna Abu Hurairah (may Allah be pleased with him) narrates that the Messenger of Allah (peace and blessings be upon him) said: Do not envy one another, do not artificially inflate prices, do not harbor hatred against one another, avoid mutual severance of relations and enmity, and let no one make an offer over the offer of his brother. O servants of Allah! Become brothers. A Muslim is the brother of a Muslim; he does not oppress him, nor does he disgrace him, nor does he look down upon him. Piety is here, and then he (peace and blessings be upon him) pointed towards his blessed chest and repeated this action three times. It is enough evil (or shirk) for a man that he considers his Muslim brother insignificant. The blood, wealth, and honor of every Muslim are forbidden to every other Muslim.