No Laghw (dirty, false, evil vain talk) will they hear therein, nor any sinful speech (like backbiting, etc.).

O you who believe! Avoid much suspicions, indeed some suspicions are sins. And spy not, neither backbite one another. Would one of you like to eat the flesh of his dead brother? You would hate it (so hate backbiting). And fear Allah. Verily, Allah is the One Who accepts repentance, Most Merciful.