[Machine] The Messenger of Allah ﷺ forbade me from selling what I do not possess, and in another narration by Hammad, the Messenger of Allah ﷺ said to him, "Do not sell what you do not have."  

نَهَانِي رَسُولُ اللهِ ﷺ أَنْ أَبِيعَ مَا لَيْسَ عِنْدِي وَفِي رِوَايَةِ حَمَّادٍ أَنَّ رَسُولَ اللهِ ﷺ قَالَ لَهُ لَا تَبِعْ مَا لَيْسَ عِنْدَكَ  

[Machine] That the Messenger of Allah ﷺ sent Attab bin Asid to the people of Mecca to inform them about four qualities: that two conditions should not be included in a sale, that there should be no sale with a debt, that there should be no sale of what one does not own, and that there should be no profit without guarantee.  

أَنَّ رَسُولَ اللهِ ﷺ أَرْسَلَ عَتَّابَ بْنَ أَسِيدٍ إِلَى أَهْلِ مَكَّةَ أَنْ أَبْلِغْهُمْ عَنِّي أَرْبَعَ خِصَالٍ أَنْ لَا يَصْلُحَ شَرْطَانِ فِي بَيْعٍ وَلَا بَيْعٌ وَسَلَفٌ وَلَا بَيْعُ مَا لَا يَمْلِكُ وَلَا رِبْحُ مَا لَا يَضْمَنُ