From Sahih Muslim (Hadith 1090):
A'isha reported:One night I missed Allah's Messenger (ﷺ) from the bed, and when I sought him my hand touched the soles of his feet while he was in the state of prostration; they (feet) were raised and he was saying:" O Allah, I seek refuge in Thy pleasure from Thy anger, and in Thy forgiveness from Thy punishment, and I seek refuge in Thee from Thee (Thy anger). I cannot reckon Thy praise. Thou art as Thou hast lauded Thyself
Reference: Muslim 1090