[Machine] The Prophet ﷺ prohibited the sale of debt and the combination of two sales in one transaction, and the sale of what you do not own. The Prophet ﷺ said, "It is forbidden to sell what is not in your possession."
أَنَّ رَسُولَ اللهِ ﷺ نَهَى عَنْ بَيْعٍ وَسَلَفٍ وَعَنْ بَيْعَتَيْنِ فِي صَفْقَةٍ وَاحِدَةٍ وَعَنْ بَيْعِ مَا لَيْسَ عِنْدَكَ وَقَالَ رَسُولُ اللهِ ﷺ حَرَامٌ شَفُّ مَا لَمْ يُضْمَنْ