Musannaf Ibn Abi Shaybah

It is narrated from ‘Ammarah bin ‘Abd who says that Hudhayfah (may Allah be pleased with him) said: Beware of the doors of the rulers, for they are places of tribulation. Except that tribulation comes in a doubtful form and departs manifest (i.e., when tribulation arises, the truth and correctness are not clear and evident; when it passes, a person realizes that his action was a mistake).