Narrated by Sayyiduna Abu Hurairah (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: No person should make a deal over the deal of his brother.
Hadith Referenceالفتح الربانی / كتاب البيوع والكسب والمعاش وما يتعلق بالتجارة / 5908
Hadith Gradingمحدثین:صحیح
Hadith Takhrij«أخرجه مسلم: 1413، (انظر مسند أحمد ترقيم الرسالة: 10849 ترقیم بيت الأفكار الدولية: 10861»
Brief Explanation
Benefits: … That is, two people have mutually agreed upon a price. A third person should not come and disrupt or break this agreement, because this transaction has already been concluded. In this way, hatred, malice, and discord arise within society.