Hadith #2935 (Sunan Abi Dawud)
Book: Tribute, Spoils, and Rulership (Kitab Al-Kharaj, Wal-Fai' Wal-Imarah)
Narrator(s): Abdul Rahim bin Sulaiman عبد الرحيم بن سليمان الكناني, Asim bin 'Umar bin Qatada al-Ansari عاصم بن عمر بن قتادة, Ibn Ishaq محمد بن إسحاق بن يسار‎, Mahmud bin Labid bin 'Uqba, Muhammad bin Ibrahim bin al-Harith محمد بن إبراهيم بن الحارث, Rafi' bin Khadij bin Rafi'
Grade: Da'if

The Prophet (ﷺ) has a secretary named Sijill.

Source: https://parallelquran.com/hadith/sunan-abi-dawud-2935/