I heard the Messenger of Allah ﷺ say, "Recite the Quran, for it will come on the Day of Resurrection as an intercessor for its companions. Recite the two luminous ones, al-Baqarah and Surah Al Imran, for they will come on the Day of Resurrection as if they were two clouds, or two shades, or two flocks of birds in ranks, pleading on behalf of their companions. Recite Surah al-Baqarah, for taking hold of it is a blessing, abandoning it is a regret, and the magicians cannot overcome it."
سمعت رسول الله ﷺ يقول: اقرأوا القرآن فإنه يأتي يوم القيامة شفيعا لأصحابه، اقرأوا الزهراوين البقرة وسورة آل عمران، فإنهما تأتيان يوم القيامة كأنهما غمامتان، أو كأنهما غياتيان أو كأنهما فرقان من طير صواف تحاجان عن أصحابهما. اقرأوا سورة البقرة، فإن أخذها بركة، وتركها حسرة، ولا يستطيعها البطلة.
Muslim narrated it in the Book of the Prayer of Travelers (804), from Hasan bin Ali Hulwani, who said, "Abu Tuba (that is, Rabi bin Nafi) told us, Muawiya (meaning Ibn Salam) told us, from Zayd, that he heard Abu Salam say, 'Abu Umama told me,'" and he mentioned it.Zayd is the brother of Muawiya bin Salam bin Abu Salam, which means Abu Salam is Zayd's grandfather.