From Sahih Muslim (Hadith 1586):
Anas b. Malik reported:We went out from Medina to Mecca with the Messenger of Allah (ﷺ) and he prayed two rak'ahs at each time of prayer till we returned to Medina. I said: For how long did he stay in Mecca? He said: (For) ten (days)
Reference: Muslim 1586