Al-Sheikh Al-Kuleini states in Al-Kafi Book: Sudeir reported from Imam Abou Jaa'far (Pbuh) that he said: "Al-Mulk Chapter is immunity. It prevents torment in the grave. It is also written in Al-Tawrat Book as Al-Mulk Chapter. He who recites it in a night shall stay in goodness and he shall never be unaware. I bow reciting it after the night prayer when sitting. My father (Pbuh) used to recites each day and night. For he who recites it, when Ankar and Nakeer come to him from the side of his legs in his grave, his legs will say to them: "You have no way through here. This servant used to stand on me and recite Al-Mulk Chapter every day and night. If they came to him from the side of his abdomen, it will say to them: " You have no way through here. This servant made me perceive Al-Mulk Chapter." If they came from the side of his tongue, it will say to them: " You have no way through here. This servant used to recite by me Al-Mulk Chapter every day and night."
Ibn Babawaih states in Thawab Al-A'amal Book: Abou Baseer reported that Imam Abou Abdellah (Pbuh) said: "He who recites Al-Mulk Chapter in a regular prayer before he sleeps shall be in the safety of Allah till the morning and in His safety on Resurrection Day till he goes to heaven."
Al-Tabrasi states in Majma' Al-Bayan Book: Ibn Abbas reported from the Messenger of Allah (Pbuhp) that he said: "I would love that Al-Mulk Chapter is in the heart of every believer."
Al-Tabrasi states in Majma' Al-Bayan Book: The Messenger of Allah (Pbuhp) said: " He who recites Al-Mulk Chapter is as if he worshiped all nightlong in the Night of Fate."
Ibn Abi Al-Jumhur states in Durar Al-La'aly Book: Tawoos reported that the Messenger of Allah (Pbuhp) said: "He who recites Al-Sajda and Al-Mulk Chapters in a night is rewarded as if he worshiped all nightlong in the Night of Fate."
Khawas Al-Quran Book: The Messenger of Allah (Pbuhp) said: "He who recites this chapter that is the savior in the grave is rewarded as if he worshiped all nightlong in the Night of Fate. For he who memorizes it, it shall relief his soul in the grave. It shall save him from every torment in the grave. It shall protect him till he is resurrected. It shall intercede for him before its Lord and brings him close till it escorts him to heaven being safe from loneliness and aloneness in his grave."