The Holy Prophet of Allah (S.A.W) said: One who recites “Alif Laam Tanzeel al-Sajdah” at night and Yasin, Qamar and Surah Mulk, there would be for him a light and a protection from Satan, and his position with rise till the Day of Judgment.
The Holy Prophet of Allah (S.A.W) said: One who recites Surah Sajdah and Surah Mulk it is as if he has stayed awake the night of Qadr.
Holy Prophet (s.a.w.) that the reward for reciting surah as-Sajdah and surah al-Mulk is the same as what reward is gotten if one spends the entire night of Qadr in worship. It is said that the HolyProphet (s.a.w.) used to recite these surah before sleeping.
surah as sajdah
surah sajdah