رِيَاضُ الصَّالِحِينَ
Riyad as-Salihin 1775
The Book of the Prohibited actions
Prohibition of Malpractices in Commerce
عَنْ أَنَسٍ رَضِيَ اللَّه عَنْهُ قَالَ: نَهَى رَسُولُ اللَّهِ صَلَّى اللَّه عَلَيْهِ وَسَلَّمَ أَنْ يَبِيعَ حَاضِرٌ لِبَادٍ وَإِنْ كَانَ أَخَاهُ لأَبِيهِ وَأُمِّهِ. ((مُتَّفَقٌ عَلَيْهِ)).
Anas bin Malik (May Allah be pleased with him) said: The Messenger of Allah (ﷺ) forbade that a person in the city should make a deal on behalf of a villager on commission even if he is his real brother." [Al-Bukhari and Muslim]
Riyad as-Salihin, 1775