'Abdullaah ibn Mas'ood 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 (salallaahu 'alaihiwasallam), 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 (salallaahu 'alaihiwasallam) 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. At-Tirmidhi said concerning it, "This is a Hasan Hadith."]
Abu Hurairah (May Allah be pleased with him) reported: I heard the Messenger of Allah (salallaahu 'alaihiwasallam) saying, "There is a Surah in the Qur'an which contains thirty Ayat which kept interceding for a man until his sins are forgiven. This Surah is 'Blessed is He in Whose Hand is the dominion.' (Surat Al-Mulk 67)." [At-Tirmidhi and Abu Dawud].
Commentary from Riyad-us-Saliheen: This Hadith means that on the Day of Resurrection this Surah will intercede with Allaah for the forgiveness of its reciter. This Hadith has been narrated (in Arabic) in the past tense because, like the past indefinite, its occurrence is definite and not open to inquiry. At some places, however, it has also been narrated in the present tense.
He (salallaahu 'alaihi wa sallam) used to recite Surah As-Sajdah and Surah Al-Mulk(in Arabic) before sleeping.
Reference: At-Tirmithi, An-Nasa'i. See also Al-Albani, Sahihul-Jami ' As-Saghir 4/255
And whoever contradicts and opposes the Messenger (Muhammad,salallahu alaihi wa sallam) after the right path has been shown clearly to him, and follows other than the believers' way. We shall keep him in the path he has chosen, and burn him in Hell - what an evil destination. (An-Nisa 4:115)
- Every issue of aqeedah (creed), ibaadah (worship) or manhaj (methodology) which the Book of Allaah and the Sunnah has not provided a text for and upon which the Companions never agreed upon is falsehood, vain and innovated.
"Adhere to the narrations of the Salaf (the Prophet and sahaaba; tabi'een; and tabi' tabi'een), even if the people were to abandon you. And beware of the opinions of people, no matter how much they beautify it with speech." - Imaam al-Awzaa'ee [d. 157H]