Reading Al-Iklas, Al-Falaq, An-Naas before sleeping
Before going to sleep, one should recite the following surah. All three surah can be found in the Qur'an.
Chapter 112 - Al-'Ikhlas
Chapter 113 - Al-Falaq
Chapter 114 - An-Naas
One should then blow onto their hands and wipe the hands over the face and body. The sunnah is that this is repeated three times.
- Aishah  reported that the Messenger of Allah  used to recite "Qul huwallahu ahad", "Qul a'oothu birrabilfalaq" and "Qul a'oothu birrabinnaas" every night when he went to sleep, then wiped his face and whatever he was able from his body, beginning with his head and face, and what faces him from his body, three times".