Sahih Muslim Book 007, Hadith Number 2647.
Chapter : What is permitted for the Muhrim (wearer of Ihram) in Hajj and Umra, what is not permissible and forbiddance of the use of perfume.
Ibn 'Umar (Allah be pleased with them) reported that a person asked the Messenger of Allah (may peace be upon him) what a Muhrim should put on as dress. Thereupon the Messenger of Allah (may peace be upon him) 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.