ENOfficial
Jabir reported the Prophet (ﷺ) as saying, "God has sent me to perfect good qualities of character and to complete good deeds." It is transmitted in Sharh as-sunna.
Source: sunnah.com
Other translations
Arabic
وَعَنْ جَابِرٌ أَنَّ النَّبِيَّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ قا ل: «إِنَّ اللَّهَ بَعَثَنِي لِتَمَامِ مَكَارِمِ الْأَخْلَاقِ وَكَمَالِ محَاسِن الْأَفْعَال» . رَوَاهُ فِي شرح السّنة
sunnah.com