It is narrated from Sayyiduna Abu Hurairah (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: "Beware of suspicion, for suspicion is the most false of speech. And do not artificially raise prices, and do not harbor envy or hatred among yourselves, and do not compete with one another (for worldly gains), and do not turn your backs on one another, and be, O servants of Allah, brothers to one another."