What Surah To Read Before Bed.
Surah al Mulk: Ibn Abbas (RA) said that one of Rasulullah (SAW)’s companions set up his tent over a grave without realizing that it was a grave and it contained a man who was reciting the Surah Tabarakallahi Biyadihil Mulk up to the end. He went and told Rasulullah (SAW) who said, “It is The Defender; it is The Protector which safeguards from Allah punishment.” (at-Tirmidhi)
3 Last Verses of Surah al Hashr: Rasulullah (SAW) said, “Whoever when he wakes in the morning says ‘I seek refuge with Allah against the accursed Shaytaan’ and then recited three verses from the last part of Surah al Hashr, will be assigned seventy thousand angels to pray for him until the evening, and should he die that day, he would have died a martyr.” (At-Tirmidhi)
Ayat al Kursi: Rasulullah (SAW) said: “If one recites Ayat ul Kursi before going to sleep, Allah will send an Angel to come and look after you and protect you till the morning.? His home, family and also neighbours will remain in safety until morning.”
Surah al Kaafiroon: Rasulullah (SAW) said, “Recite surah al Kaafiroon and then go to sleep after coming to its end, for it is a clearance from shirk.” (Abu Dawud)
Surah as Sajda: Rasulullah (SAW) would not sleep until he recited Surah as Sajda. (At-Tirmidhi)