Musnad Ahmad 1437

It was narrated that ‘Ali or az-Zubair said: The Messenger of Allah (ﷺ) used to address us and remind us of the annals of Allah, until we could see that on his face (because of alarm). It was as if he was warning people against an enemy that would attack them in the morning. If he had just recently met with Jibreel, he would not smile until Jibreel had departed from him.