Musnad Ahmad 5:286

Husayn ibn Muhammad narrated to us, Isra'il narrated to us, from 'Abd al-A'la, from Abu 'Abd al-Rahman, from 'Ali, who said: The Messenger of Allah (peace and blessings of Allah be upon him) said: "And you make your provision" [Al-Waqi'ah: 82], he says: "Your gratitude." "That you deny" [Al-Waqi'ah: 82], you say: "We were given rain by the rising of such-and-such, and by the star of such-and-such."