Quran 49:6 — The Walls (Al-Hujurat)

O you who believe, if a wicked person brings any news to you, you shall first investigate, lest you commit injustice towards some people, out of ignorance, then become sorry and remorseful for what you have done.

[49:5] Had they been patient until you came out to them, it would have been better for them. GOD is Forgiver, Most Merciful.

[49:7] And know that GOD's messenger has come in your midst. Had he listened to you in many things, you would have made things difficult for yourselves. But GOD made you love faith and adorned it in your hearts, and He made you abhor disbelief, wickedness, and disobedience. These are the guided ones.