There are some people who are shy, have a weak personality and have little patience tolerating any harm, so they live withdrawn from the society and people think him to be modest, gullible, generous, and quiet; and they think that he never backbites and could not possibly oppress a soul. Whereas, when he is in his home and in the presence of those whom he is familiar with he is very harsh. Nothing prevented him from showing his true colors except his spinelessness when he meets with strangers.
O you who believe! If a Fâsiq (liar - evil person) comes to you with any news, verify it, lest you should harm people in ignorance, and afterwards you become regretful for what you have done.