Musnad Ahmad 658:164

Aswad ibn Amir narrated to us, Israel informed us, from Abu Ishaq, from al-Bara’ who said: The Prophet, peace and blessings of Allah be upon him, performed Umrah in Dhu al-Qi'dah. He mentioned its meaning and said: "That weapons shall not enter Makkah, and none of its people shall be taken out."