Jabir reported that Messenger of Allah ﷺ forbade the wrapping of oneself completely leaving no room for the arm and supporting oneself when sitting with a single garment wrapped round one's knees and a person raising one of his feet and placing it on the other while lying on his back. (Using translation from Muslim 2099c)
عَنْ رَسُولِ اللَّهِ ﷺ «أَنَّهُ نَهَى عَنِ اشْتِمَالِ الصَّمَّاءِ وَأَنْ يَرْفَعَ الرَّجُلُ إِحْدَى رِجْلَيْهِ عَلَى الْأُخْرَى وَهُوَ مُسْتَلْقٍ عَلَى ظَهْرِهِ» سكت عنه الذهبي في التلخيص