Abu Hurairah · Brotherhood, avoiding envy and hatred; sanctity of a Muslim

The Messenger of Allah (peace and blessings of Allah be upon him) said, "Do not envy one another, and do not inflate prices for one another, and do not hate one another, and do not turn away from one another, and do not undercut one another in trade, but [rather] be slaves of Allah and brothers [amongst yourselves]. A Muslim is the brother of a Muslim: he does not oppress him, nor does he fail him, nor does he lie…