The Prophet (ﷺ) used to invoke Allah at night, saying, "O Allah: All the Praises are for You: You are the Lord of the Heavens and the Earth. All the Praises are for You; You are the Maintainer of the Heaven and the Earth and whatever is in them. All the Praises are for You; You are the Light of the Heavens and the Earth. 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 (Hell) Fire is the Truth, and the Hour is the Truth. O Allah! I surrender myself to You, and I believe in You and I depend upon You, and I repent to You and with You (Your evidences) I stand against my opponents, and to you I leave the judgment (for those who refuse my message). O Allah! Forgive me my sins that I did in the past or will do in the future, and also the sins I did in secret or in public. You are my only God (Whom I worship) and there is no other God for me (i.e. I worship none but You)." Narrated Sufyan: (regarding the above narration) that the Prophet (ﷺ) added, "You are the Truth, and Your Word is the Truth."

The Prophet (ﷺ) said: If anyone says in the morning: "O Allah! in the morning we call Thee, the bearers of Thy Throne, Thy angels, and all Thy creatures to witness that Thou art Allah than Whom there is no god, Thou being alone and without a partner, and that Muhammad is Thy servant and Thy Apostle," Allah will forgive him any sins that he commits that day; and if he repeats them in the evening. Allah will forgive him any sins he commits that night.

The Prophet (ﷺ) said to him: “Should I not direct you to the chief of supplications for forgiveness? ‘O Allah, You are my Lord, there is none worthy of worship except You, You created me and I am Your slave. I am adhering to Your covenant and Your promise as much as I am able to, I seek refuge in You from the evil of what I have done. I admit to You your blessings upon me, and I admit to my sins. So forgive me, for there is none who can forgive sins except You (Allāhumma anta rabbī lā ilāha illā anta, khalaqtanī wa ana `abduka, wa ana `alā `ahdika wa wa`dika ma-staṭa`tu. A`ūdhu bika min sharri ma ṣana`tu, wa abū'u ilayka bini`matika `alayya wa a`tarifu bidhunūbī faghfirlī dhunūbī innahu lā yaghfirudh-dhunūba illā ant).’ None of you says it when he reaches the evening, and a decree comes upon him before he reaches morning, except that Paradise becomes obligatory upon him. And none says it when he reaches the morning, and a decree comes upon him before he reaches evening, except that Paradise becomes obligatory for him.”

When the Messenger of Allah (ﷺ) awake at night, he said: There is no god but thou, glory be to Thee, O Allah, I ask Thy pardon for my sin and I ask Thee for Thy mercy. O Allah! advance me in knowledge: do not cause my heart to deviate (from guidance) after Thou hast guided me, and grant me mercy from thyself; verily thou art the grantor.

“The Messenger of Allah (ﷺ) taught me, saying: ‘Say: “O Allah, this is the coming of Your night, and the departing of Your day, the voices of those calling to You, and the time of prayers to You, I ask You to forgive me (Allāhumma hādhastiqbālu lailika, wastidbāru nahārika, wa aṣwātu du`ātika wa ḥuḍūru ṣalawātika, as’aluka an taghfira lī).”