(21) باب مَا لاَ يَلْبَسُ الْمُحْرِمُ مِنَ الثِّيَابِ
Narrated `Abdullah bin `Umar:
A man asked, "O Allah's Messenger (ﷺ)! What kind of clothes should a Muhrim wear?" Allah's Messenger (ﷺ) replied, "He should not wear a shirt, a turban, trousers, a headcloak or leather socks except if he can find no slippers, he then may wear leather socks after cutting off what might cover the ankles. And he should not wear clothes which are scented with saffron or Wars (kinds of Perfumes) . "
Reference: Sahih al-Bukhari 1542
In-book reference: Book 25, Hadith 29
USC-MSA web (English) reference(deprecated numbering scheme): Vol. 2, Book 26, Hadith 615