I heard the Prophet ﷺ say, "On the Day of Resurrection, the Quran will be brought forth along with its people who used to act upon it. Surat al-Baqarah and Aal Imran will come ahead of it." The Messenger of Allah ﷺ gave three parables for these two surahs which I have never forgotten since. He said, "It is as if they were two clouds, or two black canopies with a radiant light between them, or as if they were two flocks of birds in ranks, pleading on behalf of their reciter."
سمعت النبي ﷺ يقول: يؤتى بالقرآن يوم القيامة، وأهله الذين كانوا يعملون به، تقدمه سورة البقرة وآل عمران، وضرب لهما رسول الله ﷺ ثلاثة أمثال، ما نسيتهن بعد، قال: كأنهما غمامتان، أو ظلتان سوداوان بينهما شرق، أو كأنهما حزقان من طير صواف تحاجان عن صاحبهما.
Muslim reported it in the Book of the Prayer of Travelers (805), from Ishaq bin Mansur, Yazid bin Abd Rabbih told us, Walid bin Muslim narrated to us, from Muhammad bin Muhajir, from Walid bin Abdul-Rahman Jurashi, from Jubayr bin Nufayr, who said, I heard Nawas bin Saman say, then he related it.His statement, "the shade," refers to the cloud.His statement, "shining," means light.His statement, "groups," means gatherings.