Narrated Ya‘la b. Umayya (Umayya was Ya'la’s mother) said:
When we were with the Prophet at al- Ji'rana a desert Arab came to him wearing a tunic which was copiously perfumed (Literally “smeared copiously with khaluq." This is a perfume composed of saffron and other elements, yellow and red being the predominant colours) and said, “Messenger of God, I entered the sacred state for the ’umra while wearing this.” He replied, “Wash the perfume which is on you three times, take off the tunic, then do in your ’umra as you do in your hajj.”
Ibn ‘Abbas told of hearing God’s messenger saying in the course of an address, “When one who is on pilgrimage cannot get sandals he may wear shoes, and when he cannot get a lower garment he may wear trousers,”
‘Abdallah b. ‘Umar told that when a man asked God’s messenger what clothing one who was on pilgrimage should wear, he said, “Do not wear shirts, turbans, trousers, garments with head coverings, or shoes, unless one cannot get sandals and wears shoes, in which case he must cut them to come below the ankles; and you must not wear clothing which has any dye of saffron or wars (A plant of a yellow colour in the Yemen, like sesame. The word is also used for the colouring matter which is shaken out when the dower opens)
Bukhari and Muslim. Bukhari added in a version, “A woman who is on pilgrimage must not be veiled, or wear gloves.”