[Machine] The Messenger of Allah ﷺ forbade wearing two types of clothing and engaging in two types of transactions. As for the two transactions, they are the simultaneous exchange and the deferred exchange. And as for the two types of clothing, they are the wearing of a shirt over a shirt, and the covering of oneself in a single garment such that nothing is left on his private parts.
نَهَى رَسُولُ اللهِ ﷺ عَنْ لِبْسَتَيْنِ وَعَنْ بَيْعَتَيْنِ أَمَّا الْبَيْعَتَانِ الْمُلَامَسَةُ وَالْمُنَابَذَةُ وَاللِّبْسَتَانِ اشْتِمَالُ الصَّمَّاءِ وَالِاحْتِبَاءُ فِي ثَوْبٍ وَاحِدٍ لَيْسَ عَلَى فَرْجِهِ مِنْهُ شَيْءٌ