A person asked Allah's Messenger (ﷺ), "What should a Muhrim wear?" He replied, "He should not wear shirts, trousers, a burnus (a hooded cloak), or clothes which are stained with saffron or Wars (a kind of perfume). Whoever does not find a sandal to wear can wear Khuffs (socks made from thick fabric or leather), but these should be cut short so as not to cover the ankles.
Sahih al-Bukhari Book 8, Hadith 18
← Previous Hadith A man stood up and asked the Prophet (ﷺ) about praying in a single garment. The Prophet (ﷺ) said, "Has every one of you two garments?" A man put a similar question to `Umar on which he replied, "When Allah makes you wealthier then you should clothe yourself properly during prayers. Otherwise one can pray with an Izar and a Rida' (a sheet covering the upper part of the body.) Izar and a shirt, Izar and a Qaba', trousers and a Rida, trousers and a shirt or trousers and a Qaba', Tubban and a Qaba' or Tubban and a shirt." (The narrator added, "I think that he also said a Tubban and a Rida. ")

Sahih al-Bukhari Book 8, Hadith 17 Next Hadith → Allah's Messenger (ﷺ) forbade Ishtimal-As-Samma' (wrapping one's body with a garment so that one cannot raise its end or take one's hand out of it). He also forbade Al-Ihtiba' (sitting on buttocks with knees close to `Abdomen and feet apart with the hands circling the knees) while wrapping oneself with a single garment, without having a part of it over the private parts.

Sahih al-Bukhari Book 8, Hadith 19