It is mentioned from Imam al-Sadiq (a): ‘Whosoever regularly recites this surah in his supererogatory prayers (nawāfil), God will not inflict him with an earthquake, nor shall he die from it. Neither shall he be inflicted by any lightening, or natural disasters from this world. When such a person dies, the order shall be given that he is to be taken to the heavens immediately. God will then say: “My servant, I have granted you heaven, so live therein however you wish.”’
It is reported in Majmaʿ al-Bayān from the Prophet: ‘Whosoever recites this surah, it is as if he has recited Sūrat al-Baqarah, and his reward shall be the reward of one who has recited a fourth of the Quran.’
It is reported from the Prophet: ‘Whosoever recites this surah four times, it as if he has recited the entire Quran.’
[1] Thawab, p. 152. [2] Mustadrak.W, 4/367; Tabrisi, 10/796. [3] Mustadrak.W, 4/367; al-Hāfiẓ ibn Ḥajar, Takhrīj al-Kashshāf, 4/785.