Musannaf Ibn Abi Shaybah

Hazrat Uzrah bin Qais Bajali narrates that when Hazrat Umar removed Hazrat Khalid bin Walid and appointed Hazrat Abu Ubaidah as governor in Syria, Hazrat Khalid delivered a sermon. In it, he praised Allah Almighty and said: Indeed, the Commander of the Faithful appointed me as governor over Syria, then when only butter and honey remained, he removed me and preferred someone else over me. Upon this, a man stood up and said: O Amir, be patient, this is a trial. Hazrat Khalid said: As long as Hazrat Umar is alive, there is no trial, but when people are left without a leader, then a man will come to a land and seek in it what is not in his own land, but he will not find it.