Musnad Ahmad 5:523

Abdullah narrated to us, Ishaq ibn Isma'il narrated to us, Yahya ibn Abi Bukayr narrated to us, from Isra'il, from 'Abd al-A'la, from Abu 'Abd al-Rahman, from 'Ali, from the Prophet, peace and blessings of Allah be upon him, who said: "And you make your provision" [Al-Waqi'ah: 82], he said: "Your gratitude." "That you deny" [Al-Waqi'ah: 82], he said: "You say: 'We have been given rain by the star of such-and-such and such-and-such.'"