‘Abdallah b. Ghannam reported God’s messenger as saying, that if anyone says in the morning, "O God, whatever favour has come to me or to any of Thy creatures in the morning, it comes from Thee alone who hast no partner, to whom be praise and thanksgiving," he will have expressed full thanksgiving for the day; and if anyone says the same in the evening he will have expressed full thanksgiving for the night.
Abu Dawud transmitted it.