Musnad Ahmad 25:175

Yahya narrated to us, from Shu'bah, Al-Hakam narrated to me, from Mujahid, from Ibn Abbas, from the Prophet, peace and blessings of Allah be upon him, who said: "I was aided by the As-Saba (the easterly wind), and 'Ad was destroyed by Ad-Dabur (the westerly wind)."