It is narrated from Hazrat Ma'qil bin Yasar (may Allah be pleased with him) that I heard the Prophet (peace and blessings of Allah be upon him) say: Any ruler of a people, whether his subjects are few or many, if he does not deal with them justly, Allah will throw him face down into Hell.
Hadith Referenceمسند احمد / أول مسند البصريين / 20290
Hadith Gradingحکم دارالسلام:حديث صحيح، وهذا إسناد ضعيف، ابنة معقل بن يسار لا تعرف