Musannaf Ibn Abi Shayba 37:160

Ghundar narrated to us, from Shu'bah, from Ali ibn Mudrik, who said: I heard Abdullah ibn Rawah say: The tribulation (fitnah) was mentioned in the presence of Ibn Mas'ud. He said: Enter your house. If he enters upon you, then be like the heavy camel. It does not rise except reluctantly, and it does not walk except reluctantly.