Riyad as-Salihin — Hadith #46015

On the authority of Abu Hurairah, may God be pleased with him, he said: The Messenger of God, may God bless him and grant him peace, said “Whoever sits in a gathering, and there is a lot of confusion in it, and he says before he gets up from that gathering: Glory be to You, O God, and with Your praise, I bear witness that there is no god but You, I seek Your forgiveness and I repent to You, unless he will be forgiven for whatever he was in that gathering.” ((Narrated by Al-Tirmidhi and he said it is a good and authentic hadith)).