Musnad Abu Ya'la al-Mawsili 137:7

Muhammad ibn Abi Bakr al-Muqaddami narrated to us, Abd al-Rahman ibn Abi al-Sahba’ narrated to us, Abu Ghalib narrated to us, he said: I heard al-Ala’ ibn Ziyad say: I said to Anas: "How will the people be resurrected on the Day of Resurrection?" He said: "They will be resurrected while the sky is drizzling upon them."