[Machine] About the jurists who follow the saying of the people of Madinah, they used to say: when two men enter into a transaction and they disagree about the price, their disagreement should be settled by a judge. If they both take an oath, then the statement of the seller is accepted and the buyer is given the choice to either accept that price or to leave it. It has been narrated from Shurayh that he said: "If they both take an oath and swear by the right hand, then the transaction is intended."  

عَنِ الْفُقَهَاءِ الَّذِينَ يُنْتَهَى إِلَى قَوْلِهِمْ مِنْ أَهْلِ الْمَدِينَةِ كَانُوا يَقُولُونَ إِذَا تَبَايَعَ الرَّجُلَانِ بِالْبَيْعِ وَاخْتَلَفَا فِي الثَّمَنِ اخْتَلَفَا جَمِيعًا فَأَيُّهُمَا نَكَلَ لَزِمَهُ الْقَضَاءُ فَإِنْ حَلَفَا جَمِيعًا كَانَ الْقَوْلُ مَا قَالَ الْبَائِعُ وَخُيِّرَ الْمُبْتَاعُ إِنْ شَاءَ أَخَذَ بِذَلِكَ الثَّمَنِ وَإِنْ شَاءَ تَرَكَ وَرُوِّينَا عَنْ شُرَيْحٍ أَنَّهُ قَالَ فَإِنْ نَكَلَا عَنِ الْيَمِينِ تَرَادَّا الْبَيْعَ