Musannaf Ibn Abi Shaybah

Hazrat Qasim bin Abdur Rahman narrates that Hazrat Abdullah bin Masood (may Allah be pleased with him) said: Whoever wakes up at night from sleep and then recites these words: "There is no deity except You, O my Lord! I have wronged myself, so forgive me," that person will come out cleansed of sins just as a snake sheds its old skin.

Hazrat Zaid bin Suhan narrates: When Hazrat Salman would wake up at night from sleep, he would say: "Glory be to the One who is the Sustainer of the Prophets and the Deity of the Messengers."

Hazrat Abu Kathir, who was the freed slave of Umm al-Mu'mineen Umm Salamah, narrates: When Hazrat Umm Salamah would wake up at night from sleep, she would supplicate: My Lord! Forgive and have mercy, and grant guidance towards the straight path.

Hazrat Abu Al-Ahwas narrates that Hazrat Abdullah bin Masood (may Allah be pleased with him) when he would wake up at night, he would say: O people! (Indeed, there has come to you from your Lord a proof, and We have sent down to you a clear, manifest light).