(20) باب اشْتِمَالِ الصَّمَّاءِ
Narrated Abu Huraira:
The Prophet (ﷺ) had forbidden: (A) the Mulamasa and Munabadha (bargains), (B) the offering of two prayers, one after the morning compulsory prayer till the sun rises, and the others, after the `Asr prayer till the sun sets (C) He also forbade that one should sit wearing one garment, nothing of which covers his private parts (D) and prevent them from exposure to the sky; (E) he also forbade Ishtimalas- Samma'.
Reference: Sahih al-Bukhari 5819
In-book reference: Book 77, Hadith 36
USC-MSA web (English) reference(deprecated numbering scheme): Vol. 7, Book 72, Hadith 709