Sunnan Abu Dawud Collection: ::Book Number 10:: Hadith # 1815
Narrated Ya'la ibn Umayyah: A man came to the Prophet (peace_be_upon_him) when he was at al-Ji'ranah. He was wearing perfume or the mark of saffron was on him and he was wearing a tunic. He said: Apostle of Allah, what do you command me to do while performing my Umrah. In the meantime, Allah, the Exalted, sent a revelation to the Prophet (peace_be_upon_him). When he (the Prophet) came to himself gradually, he asked: Where is the man who asking about umrah? (When the man came) he (the Prophet) said: Wash the perfume which is on you, or he said: (Wash) the mark of saffron (the narrator is doubtful), take off the tunic, then do in your umrah as you do in your hajj.