Musnad Ahmad 25:851

Ishaq narrated to us, he said: Malik informed us, from Abu al-Zubayr, from Tawus, from Ibn Abbas, that the Messenger of Allah, peace and blessings of Allah be upon him, when he stood for prayer in the middle of the night, would say: "O Allah, to You is the praise; You are the light of the heavens and the earth. To You is the praise; You are the sustainer of the heavens and the earth. To You is the praise; You are the Lord of the heavens and the earth and whoever is in them. You are the Truth, and Your word is the truth, and Your promise is the truth, and the meeting with You is the truth, and Paradise is the truth, and the Fire is the truth, and the Hour is the truth. O Allah, to You I have submitted, and in You I have believed, and upon You I have relied, and to You I have turned in repentance, and by You I have disputed, and to You I have brought for judgment. So forgive me for what I have sent forth and what I have delayed, and what I have concealed and what I have declared. You are the One; there is no god but You."