وَحَدَّثَنِي عَنْ مَالِكٍ، أَنَّ مُعَاذَ بْنَ جَبَلٍ، قَالَ آخِرُ مَا أَوْصَانِي بِهِ رَسُولُ اللَّهِ صلى الله عليه وسلم حِينَ وَضَعْتُ رِجْلِي فِي الْغَرْزِ أَنْ قَالَ ‏"‏ أَحْسِنْ خُلُقَكَ لِلنَّاسِ يَا مُعَاذُ بْنَ جَبَلٍ ‏"‏ ‏.‏

Yahya related to me from Malik that Muadh ibn Jabal said, "Thelast advice the Messenger of Allah, may Allah bless him and grant himpeace, gave me when I put my foot in the stirrup was that he said,'Make your character good for the people, Muadh ibn Jabal!' " Translation Not Available

Book Ref: Muwatta Imam Malik Book 47 Hadith 1636
Web Ref:  Muwatta Imam Malik Book 47 Hadith 1