Musnad Abu Ya'la al-Mawsili 22:1

Abu Talib narrated to us, Ismail bin Ayyash narrated to us, from Thabit bin Ajlan al-Ansari, that Abu Kathir al-Muharibi narrated to him, that Kharasha narrated to him, that the Messenger of Allah (may Allah bless him and grant him peace) narrated to him, saying: "Indeed, there will be tribulations after me, in which the one who is sleeping is better than the one who is awake, and the one who is sitting is better than the one who is standing, and the one who is standing is better than the one who is walking. So whoever encounters them, let him take his sword, then let him walk to a smooth rock and strike it until it breaks, then let him lie down for it until it clears up, upon whatever state it clears up."