Mishkat al-Masabih 18 The Offices of Commander and Qadi كتاب الإمارة والقضاء 87

وَعَنْ عُمَرَ رَضِيَ اللَّهُ عَنْهُ قَالَ: عَمِلْتُ عَلَى عَهْدِ رَسُولِ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ فعملني. رَوَاهُ أَبُو دَاوُد

‘Umar said, “I held an administrative post in the time of God’s Messenger, and he gave me payment for it.” Abu Dawud transmitted it.