Character
لَا تَحَاسَدُوا وَلَا تَنَاجَشُوا وَلَا تَبَاغَضُوا وَلَا تَدَابَرُوا وَلَا يَبِعْ بَعْضُكُمْ عَلَى بَيْعِ بَعْضٍ وَكُونُوا عِبَادَ اللَّهِ إِخْوَانًا
Translation
Do not envy one another, do not artificially inflate prices, do not hate one another, do not turn your backs on one another, and do not undercut one another in trade. Be servants of Allah as brothers.
Narrator
Anas ibn Malik
Source
Sahih Bukhari & Muslim
Bukhari 6076, Muslim 2563