(21) باب الاِحْتِبَاءِ فِي ثَوْبٍ وَاحِدٍ
Narrated Abu Huraira:
Allah's Messenger (ﷺ) forbade two types of dresses: (A) To sit in an Ihtiba' posture in one garment nothing of which covers his private parts. (B) to cover one side of his body with one garment and leave the other side bare The Prophet (ﷺ) also forbade the Mulamasa and Munabadha.
Reference: Sahih al-Bukhari 5821
In-book reference: Book 77, Hadith 38
USC-MSA web (English) reference(deprecated numbering scheme): Vol. 7, Book 72, Hadith 711