Jami` at-Tirmidhi 1758

Narrated Abu Hurairah: "The Messenger of Allah (ﷺ) prohibited two types of dress: As-Sama', and that a man sits with his legs drawn up in a garment, while there is nothing covering his private area. [Abu 'Eisa said:] There are narrations on this topic from 'Ali, Ibn 'Umar, 'Aishah, Abu Sa'eed, Jabir, and Abu Umamah. The Hadith if Abu Hurairah is a Hasan Sahih Gharib Hadith from this route. This has been reported through other routes from Abu Hurairah from the Prophet (ﷺ)