It is narrated from one of the sons of Sayyiduna Muhammad bin Maslamah (may Allah be pleased with him), who narrates from his father, that the Messenger of Allah (peace and blessings be upon him) said: "After me there will be tribulations; if you encounter any of them, take your sword to the edge of the Harrah and strike it against it, and go to al-Rabadhah and live as the owner of a camel, until a sinning hand kills you or a decreed death comes to you."
Hadith Referenceالمعجم الكبير للطبراني / باب الميم / 16573