Musnad Ahmad 5:728

Abdullah narrated to us, Nasr ibn Ali al-Azdi narrated to me, my father informed me, from Abu Salam Abd al-Malik ibn Muslim ibn Salam, from Imran ibn Dhabyan, from Hakim ibn Sa’d, from Ali: That the Messenger of Allah, peace and blessings of Allah be upon him, when he intended to travel, would say: "O Allah, by You I attack, by You I move, and by You I travel."