Musnad Ahmad 25:1509

Sufyan ibn 'Uyaynah narrated to us, from Sulayman ibn Abi Muslim, who heard it from Tawus, from Ibn Abbas, who said: When the Prophet, peace and blessings of Allah be upon him, would stand to perform the night prayer (tahajjud), he would say: "O Allah, to You belongs all praise. You are the Light of the heavens and the earth and whoever is within them. To You belongs all praise. You are the Sustainer of the heavens and the earth and whoever is within them. To You belongs all praise. You are the King of the heavens and the earth and whoever is within them. To You belongs all praise. You are the Truth, Your promise is true, the meeting with You is true, Paradise is true, the Fire is true, the Hour is true, Muhammad is true, and the prophets are true. O Allah, to You I have submitted, in You I have believed, upon You I have relied, to You I have turned in repentance, for Your sake I have disputed, and to You I have brought my judgment. So forgive me for what I have sent forth and what I have delayed, what I have concealed and what I have declared. You are the Advancer and You are the Delayer. There is no god but You," or he said: "There is no god other than You."