[Machine] "I heard the Messenger of Allah ﷺ say, 'It is not permissible for a believer in Allah and the Last Day to sell a transaction that has already been sold by his brother until he leaves it.'"  

سَمِعْتُ رَسُولَ اللَّهِ ﷺ يَقُولُ «لَا يَحِلُّ لِامْرِئٍ يُؤْمِنُ بِاللَّهِ وَالْيَوْمِ الْآخِرِ أَنْ يَبِيعَ عَلَى بَيْعِ أَخِيهِ حَتَّى يَتْرُكَهُ»