[7]. The prophet Muhammad said: "Oh you who have believed with your tongues but faith has not yet entered your hearts, do not back-bite the people. Do not seek to discover their faults, for whoever seeks after their faults, Allāh will seek his faults. And if Allāh seeks after someone’s faults, he will expose him for even (what he committed) in his home." The prophet also said: "Whoever conceals the faults of his brother, Allāh will conceal his faults on the Day of Resurrection. And whoever exposes the faults of his brother, Allāh will expose his faults even by revealing those he committed in (the privacy of) his home."
[8]. Muhammad, God's messenger, peace and blessings be upon him, said: “(Believers), if you have these four qualities, you will not worry about what you missed in the world: fulfilling the trust, truthful speech, good character, lawful earning, that is consuming only what is lawful and good, and abstaining from unlawful and bad things.”