Narrated Al-Bara: The Prophet assumed Ihram for Umra in the month of Dhul-Qa'da but the (pagan) people of Mecca refused to admit him into Mecca till he agreed on the condition that he would not bring into Mecca any arms but sheathed.
— Sahih Bukhari, Volume 3, Book 29: Penalty of Hunting while on Pilgrimmage, Hadith #70