[Machine] O people! We do not know if we may command you with things that are forbidden for you, or prevent you from things that are permissible for you. Indeed, the last verse revealed from the Qur'an was about interest (usury), and the Messenger of Allah ﷺ did not clarify it for us until he passed away. So, leave that which makes you doubt for that which does not make you doubt.  

يَا أَيُّهَا النَّاسُ «إِنَّا لَا نَدْرِي لَعَلَّنَا نَأْمُرُكُمْ بِأَشْيَاءَ لَا تَحِلُّ لَكُمْ وَلَعَلَّنَا نُحَرِّمُ عَلَيْكُمْ أَشْيَاءَ هِيَ لَكُمْ حَلَالٌ إِنَّ آخِرَ مَا نَزَلَ مِنَ الْقُرْآنِ آيَةُ الرِّبَا وَإِنَّ رَسُولَ اللَّهِ ﷺ لَمْ يُبَيِّنْهَا لَنَا حَتَّى مَاتَ فَدَعُوا مَا يَرِيبُكُمْ إِلَى مَا لَا يَرِيبُكُمْ»