Sleep is one of the blessings of Allah

"And He it is Who made the night a covering for you, and the sleep a rest, and He made the day to rise up again" Qur'an, 25 : 47

The Prophet (peace be upon him) used to say at different times of day and night, we mention a Hadith reported by Jabir ibn Abdullah, a companion of the Prophet who was very close to him and reported a very large number of his statements. Jabir says: “The Prophet (peace be upon him) used not to go to sleep before reading the two Surahs, Al-Sajdah and Al-Mulk.” Abu Al-Zubayr, who reports this Hadith from Jabir, mentions that “these two Surahs earn 70 good deeds more than any other surah in the Qur’an. Whoever recites them earns 70 good deeds, is given a rise of 70 steps; and 70 bad deeds are erased from his record.”

(Related by Al-Bukhari in Al-Adab Al-Mufrad and Al-Nassaie).

Moreover, reading the Qur’an, or glorifying God and repeating some supplication and prayer before going to bed make it easier for a person to get to sleep. Abdullah ibn Masud, a learned companion of the Prophet, says: “Being overtaken by sleep when glorifying God is brought about by Satan. You may try this if you wish. When you go to bed and you want to get to sleep straightaway, glorify God and praise Him.” (Related by Al-Nassaie, Abu Dawood and Al-Tirmidhi).

The Prophet of Islam likened death to sleep and life to the state of wakefulness after sleep.

Going to sleep is like dying and waking up in the morning is like rising from the grave.

Our inevitable awakening after sleeping foreshadows with certainty how we shall arise after death to give an account of our deeds on the Day of Judgement.