It is narrated from Sayyiduna Abu Tha'labah (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: "Indeed, your religion is prophethood and mercy, then caliphate and mercy, then tyrannical kingship, then there will come an oppressive kingship in which the private parts (fornication) and silk will be treated as lawful."
Hadith Referenceالمعجم الكبير للطبراني / باب اللام ألف / 18811