(1) باب مَا يُبَاحُ لِلْمُحْرِمِ بِحَجٍّ أَوْ عُمْرَةٍ وَمَا لاَ يُبَاحُ وَبَيَانِ تَحْرِيمِ الطِّيبِ عَلَيْهِ
Ibn 'Umar (Allah be pleased with them) reported that a person asked the Messenger of Allah (ﷺ) what a Muhrim should put on as dress. Thereupon the Messenger of Allah (ﷺ) said:
Do not put on a shirt or a turban, or trousers or a cap, or leather stockings except one who does not find shoes; he may put on stockings but he should trim them below the ankles. And do not wear clothes to which saffron or wars is applied.
Reference: Sahih Muslim 1177 a
In-book reference: Book 15, Hadith 1
USC-MSA web (English) reference(deprecated numbering scheme): Book 7, Hadith 2647