Musnad Ahmad 1012:70

Al-Walid ibn Muslim narrated to us, Al-Awza'i narrated to me, from Umayr ibn Hani' that he narrated from Junadah ibn Abi Umayyah, from Ubadah ibn al-Samit, who said: The Messenger of Allah (peace and blessings of Allah be upon him) said: "You must listen and obey in your hardship and your ease, and in your willingness and your unwillingness, and when others are preferred over you. And do not dispute the authority with those who hold it, even if you see that you have a right to it."