Hadith #2944Tribute, Spoils, and Rulership (Kitab Al-Kharaj, Wal-Fai' Wal-Imarah) · Narrated by Abdur Rahman bin 'Amr al-Awza'i عبد الرحمن بن عمرو أبو عمرو الأوزاعي, al-Mustward bin Shadad, Jubayr bin Nufayr al-Hadrami, Musa bin Mrwan موسى بن مروان · Sahih
‘Umar reported me to collect the sadaqah (i.e. zakat). When I became free, he ordered to give me payment for it. I said: I have worked for the sake of Allah. He said: Take what you have been given, for I held an administrative post in the time of the Messenger of Allah (ﷺ), and he gave me payment for it.
Hadith #4879General Behavior (Kitab Al-Adab) · Narrated by al-Mustward bin Shadad, Baqiyya bin al-Walid bin Sa'aid بقية بن الوليد بن صائد, Haywat bin Sharih bin Safwan حيوة بن شريح بن صفوان التجيبي, Makhul al-Shami/al-Damashiqi مكحول الشامي · Sahih
This tradition has also been transmitted by ‘Isa b. Abi ‘Isa al-sailahini from Abu al-Mughirah, as Ibn al-musaffa said.