عَنِ ابْنِ مَسْعُودٍ رَضِيَ اللَّهُ عَنْهُ قَالَ سَمِعْتُ رَسُولَ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَآلِهِ وَسَلَّمَ يَقُولُ إِذَا اخْتَلَفَ الْبَيِّعَانِ فَالْقَوْلُ مَا قَالَ الْبَائِعُ وَالْمُبْتَاعُ بِالْخِيَارِ
Narrated from Sayyiduna Abdullah bin Mas'ud (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: When two people involved in buying and selling have a dispute, then the statement of the seller will be trusted, and the buyer will have the choice (whether he wants to keep the deal or cancel it).