Abu Hurairah (May Allah be pleased with him) reported:
Messenger of Allah ﷺ said, "Those people who leave a gathering in which they have not remembered Allah, will conclude it as if it has foul odour similar to that of a rotten carcass of a donkey. And it will be a cause of grief to them."

[Abu Dawud].

وعن أبى هريرة رضى الله عنه قال: قال رسول الله ﷺ: "ما من قوم يقومون من مجلس لا يذكرون الله تعالى فيه، إلا قاموا عن مثل جيفة حمار، وكان لهم حسرة"