Musannaf Ibn Abi Shaybah 31352 — The supplication of the Prophet Dawud

It is narrated from Abu Marwan that when Ka'b broke his fast, he would face the Qiblah and supplicate three times in this way: "O Allah, grant me deliverance from every calamity that will come down from the sky at night." And when the edge of the sun rose, he would supplicate three times in this way: "O Allah, appoint for me a share in every good deed that comes down from the sky to the earth at night." The narrator said: He was then asked about this supplication, and he said: "It is the supplication of Dawud, so soften your tongues with it and make it the mark of your hearts."