Muwatta Malik 1675

وَحَدَّثَنِي عَنْ مَالِكٍ، عَنْ أَبِي الزُّبَيْرِ، عَنْ جَابِرِ بْنِ عَبْدِ اللَّهِ السَّلَمِيِّ، أَنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم نَهَى أَنْ يَأْكُلَ الرَّجُلُ بِشِمَالِهِ أَوْ يَمْشِيَ فِي نَعْلٍ وَاحِدَةٍ وَأَنْ يَشْتَمِلَ الصَّمَّاءَ وَأَنْ يَحْتَبِيَ فِي ثَوْبٍ وَاحِدٍ كَاشِفًا عَنْ فَرْجِهِ ‏.‏

Yahya related to me from Malik from Abu'z-Zubayr from Jabir ibn Abdullah as-Salami that the Messenger of Allah, may Allah bless him and grant him peace, forbade a man to eat with his left hand or walk in one sandal or wrap a single garment around his drawn-up legs exposing his genitals