Musannaf Ibn Abi Shayba 21:708

Ja'far ibn 'Awn narrated to us, he said: Hisham ibn al-Ghazz informed us, from Makhul, who said: Whoever says, "There is no power and no strength except by Allah, and there is no refuge from Allah except to Him," Allah will lift from him seventy doors of harm, the least of which is poverty.