عَنْ أَبِي هُرَيْرَةَ رَضِيَ اللَّهُ عَنْهُ قَالَ قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَآلِهِ وَسَلَّمَ لَا يَبِيعُ حَاضِرٌ لِبَادٍ وَلَا تَنَاجَشُوا وَلَا يَزِيدُ الرَّجُلُ عَلَى بَيْعِ أَخِيهِ وَلَا يَخْطُبُ عَلَى خِطْبَتِهِ وَلَا تَسْأَلُ امْرَأَةٌ طَلَاقَ أُخْتِهَا
Syedna Abu Hurairah (may Allah be pleased with him) narrates that the Messenger of Allah (peace and blessings be upon him) said: A townsman should not sell on behalf of a villager, do not practice Najsh (artificially inflating prices), no man should bid over his brother’s transaction, no person should send a marriage proposal over his brother’s proposal, and no woman should ask for her sister’s divorce.