Hadith 31-34

وَبِهذَا الإِسنادِ قالَ: قالَ رَسُولُ اللَّهِ‏ صَلَّى اللهُ عَلَيْهِ وَآلِهِ: مَن عامَلَ النَّاسَ فَلَمْ يَظلِمهُم؛ وَحَدَّثَهُم فَلَم يَكذِبهُم؛ وَوَعَدَهُم فَلَمْ يُخلِفهُم فَهُوَمِمَّنْ كَمُلَت مُرُوَّتُهُ؛ وَظَهَرَت عَدالَتُهُ؛ وَوَجَبَت أُخُوَّتُهُ وَحَرُمَت غِيْبَتُهُ.

According to the same documentation, God’s Prophet (S) said, “Whoever does not oppress the people when dealing with them, and does not lie to them when he talks with them is one whose manliness has been proven and his justness has become apparent. It is obligatory to treat him as a brother, and it is forbidden to gossip behind his back.”