عَنْ زَيْدِ بْنِ أَسْلَمَ قَالَ سَمِعْتُ رَجُلًا سَأَلَ عَبْدَ اللَّهِ بْنَ عُمَرَ رَضِيَ اللَّهُ عَنْهُمَا عَنْ بَيْعِ الْمُزَايَدَةِ فَقَالَ ابْنُ عُمَرَ نَهَى رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَآلِهِ وَسَلَّمَ أَنْ يَبِيعَ أَحَدُكُمْ عَلَى بَيْعِ أَخِيهِ إِلَّا عَلَى الْغَنَائِمِ وَالْمَوَارِيثِ
Zaid bin Aslam says: I heard that a man asked Sayyiduna Abdullah bin Umar (may Allah be pleased with them both) about trade by auction (muzayadah). He said: The Messenger of Allah (peace and blessings be upon him) forbade that a man should make a deal over his brother’s deal, except in the case of spoils of war and inherited wealth.