[AI] Indeed, the Israelites inherited it (the disease of leprosy) from the women of the tribe, so it would stay with them overnight and they would have sores. Allah (SWT) then made it that they should not eat flesh with veins in it. The Jews made it forbidden, so the verse was revealed: "All food was lawful to the children of Israel except what Israel made unlawful to himself before the Torah was revealed. Say: 'So bring the Torah and recite it, if you are truthful.'" [Surah Al-Imran: 93]. Indeed, this was before the revelation of the Torah.

أَنَّ إِسْرَائِيلَ أَخَذَهُ عِرْقُ النَّسَا فَكَانَ يَبِيتُ وَلَهُ زُقَاءٌ قَالَ فَجَعَلَ إِنْ شَفَاهُ اللَّهُ أَنْ لَا يَأْكُلَ لَحْمًا فِيهِ عُرُوقٌ قَالَ فَحَرَّمَتْهُ الْيَهُودُ فَنَزَلَتْ {كُلُّ الطَّعَامِ كَانَ حِلًّا لِبَنِي إِسْرَائِيلَ إِلَّا مَا حَرَّمَ إِسْرَائِيلُ عَلَى نَفْسِهِ مِنْ قَبْلِ أَنْ تُنَزَّلَ التَّوْرَاةُ قُلْ فَأَتَوْا بِالتَّوْرَاةِ فَاتْلُوهَا إِنْ كُنْتُمْ صَادِقِينَ} [آل عمران 93] إِنَّ هَذَا كَانَ قَبْلَ التَّوْرَاةِ