Umar II on Da’wah: The Prophet is caller to Allah, not tax collector

Ibn Kathir reported: Umar ibn Abdul Aziz, may Allah be pleased with him, said, “Verily, Allah has only sent Muhammad, peace and blessings be upon him, as a preacher. He did not send him as a tax collector.”

Source: al-Bidāyah wal-Nihāyah 13/667

عن ابن كثير قال عمر بن عبد العزيز رضي الله عنه إِنَّ اللَّهَ إِنَّمَا بَعَثَ مُحَمَّدًا صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ دَاعِيًا وَلَمْ يَبْعَثْهُ جَابِيًا

13/667  البداية والنهاية سنة مائة من الهجرة النبوية