Selling items that are unlawful to consume is prohibited

that he heard the Messenger of Allah ﷺ say in the Year of the Conquest, while he was in Makkah: “Allah and His Messenger have forbidden the sale of alcohol, carrion, swine, and idols.” It was said: “O Messenger of Allah, what about the fat of carrion? For ships are coated with it, hides are oiled with it, and people use it for lighting ˹fire˺.” He said: “No, it is unlawful.”

Then the Messenger of Allah ﷺ said at that time: “May Allah curse the Jews: when Allah forbade their fats, they melted them down, then sold them, and consumed its price.”

أَنَّهُ سَمِعَ رَسُولَ اللَّهِ ﷺ يَقُولُ عَامَ الْفَتْحِ وَهُوَ بِمَكَّةَ: «إِنَّ اللَّهَ وَرَسُولَهُ حَرَّمَ بَيْعَ الْخَمْرِ، وَالْمَيْتَةِ، وَالْخِنْزِيرِ، وَالْأَصْنَامِ». فَقِيلَ: يَا رَسُولَ اللَّهِ، أَرَأَيْتَ شُحُومَ الْمَيْتَةِ؟ فَإِنَّهَا يُطْلَى بِهَا السُّفُنُ، وَيُدْهَنُ بِهَا الْجُلُودُ، وَيَسْتَصْبِحُ بِهَا النَّاسُ. فَقَالَ: «لَا، هُوَ حَرَامٌ».

ثُمَّ قَالَ رَسُولُ اللَّهِ ﷺ عِنْدَ ذَلِكَ: «قَاتَلَ اللَّهُ الْيَهُودَ، إِنَّ اللَّهَ لَمَّا حَرَّمَ شُحُومَهَا جَمَلُوهُ، ثُمَّ بَاعُوهُ، فَأَكَلُوا ثَمَنَهُ».