He said: Messenger 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 (ﷺ).
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.
In-book : Book 11, Hadith 99
English translation : Book 10, Hadith 1815