Mu’adh ibn Jabal reported: The Prophet, peace and blessings be upon him, sent him to a people and he said, “O Messenger of Allah, instruct me.” The Prophet said, “Spread peace, offer food, and be modest before Allah as you would for a man of dignity from your family. If you do a bad deed, follow it with a good deed. Make your character as excellent as you can.”
Source: Musnad al-Bazzār 2642
Grade: Sahih (authentic) according to Al-Albani
عَنْ مُعَاذِ بْنِ جَبَلٍ أَنَّ النَّبِيَّ صَلَّى اللهُ عَلَيْهِ وَسَلَّمَ بَعَثَهُ إِلَى قَوْمٍ فَقَالَ يَا رَسُولَ اللَّهِ أَوْصِنِي قَالَ أَفْشِ السَّلَامَ وَابْذُلِ الطَّعَامَ وَاسْتَحِ اللَّهَ اسْتِحْيَاءَ رَجُلٍ ذِي هَيْبَةٍ مِنْ أَهْلِكِ وَإِذَا أَسَأْتَ فَأَحْسِنْ وَلْتُحْسِنْ خُلُقَكَ مَا اسْتَطَعْتَ
2642 مسند البزار
3559 المحدث الألباني خلاصة حكم المحدث إسناده صحيح في السلسلة الصحيحة