The Virtues of Reciting Surah Al Mulk Every Night
‘Abdullaah ibn Mas'ood (radhiAllahu 'anhu) said:
“Whoever reads 'al-Mulk’ every night, Allaah will protect him from the torment of the grave. At the time of the Messenger of Allaah (sallAllahu 'alayhi wa sallam), we used to call it al-mani'ah (that which protects). In the Book of Allah, there is a chapter [and] whoever recites it every night has done very well.”
[Sahih at-Targhib wat-Tarhib, no. 1475]
Imam Ahmad recorded from Abu Hurayrah (may Allah be pleased with him) that Allah’s Messenger (sallAllahu 'alayhi wa sallam) said,
“Verily, there is a chapter in the Qur'an which contains thirty Ayat that will intercede on behalf of its reciter until he is forgiven. (It is): 'Blessed be He in Whose Hand is the dominion.’”
[This Hadith was collected by At-Tirmidhi and the four Sunan Compilers. ”]
He (sallAllahu 'alayhi wa sallam) used to recite Surah As-Sajdah and Surah Al-Mulk (in Arabic) before sleeping
