As Salamu Alaikum wa Rahmatullahi wa Barakatuhu
Virtues of Surat Al-Baqarah and Surat Al 'Imran
Imam Ahmad said that Abu Nu'aym narrated to them that Bishr bin Muhajir said that `Abdullah bin Buraydah narrated to him from his father, "I was sitting with the Prophet and I heard him say,
“Learn Surah Al-Baqarah, because in learning it there is blessing, in ignoring it there is sorrow, and the sorceresses cannot memorize it.” He kept silent for a while and then said,
“Learn Surat Al-Baqarah and Al `Imran because they are two lights and they shade their people on the Day of Resurrection, just as two clouds, two spaces of shade or two lines of (flying) birds. The Qur'an will meet its companion in the shape of a pale-faced man on the Day of Resurrection when his grave is opened. The Qur'an will ask him, 'Do you know me' The man will say, 'I do not know you.' The Qur'an will say, 'I am your companion, the Qur'an, which has brought you thirst during the heat and made you stay up during the night. Every merchant has his certain trade. But, this Day, you are behind all types of trade.' Kingship will then be given to him in his right hand, eternal life in his left hand and the crown of grace will be placed on his head. His parents will also be granted two garments that the people of this life could never afford. They will say, 'Why were we granted these garments' It will be said, 'Because your son was carrying the Qur'an.' It will be said (to the reader of the Qur'an), 'Read and ascend through the levels of Paradise.' He will go on ascending as long as he recites, whether reciting slowly or quickly.’'
Ibn Majah also recorded part of this Hadith from Bishr bin Al-Muhajir, and this chain of narrators is Hasan, according to the criteria of Imam Muslim.
A part of this Hadith is also supported by other Hadiths. For instance, Imam Ahmad recorded that Abu Umamah Al-Bahili said that he heard the Messenger of Allah (Sallallahu Alayhi wa Sallam) say,
“Read the Qur'an, because it will intercede on behalf of its people on the Day of Resurrection. Read the two lights, Al-Baqarah and Al `Imran, because they will come in the shape of two clouds, two shades or two lines of birds on the Day of Resurrection and will argue on behalf of their people on that Day.”
The Prophet (Sallallahu Alayhi wa Sallam) then said,
“Read Al-Baqarah, because in having it there is blessing, and in ignoring there is a sorrow and the sorceresses cannot memorize it.”
Also, Imam Muslim narrated this Hadith in the Book of Prayer
Imam Ahmad narrated that An-Nawwas bin Sam'an (Radhi Allahu Anhu) said that the Prophet (Sallallahu Alayhi wa Sallam) said,
“On the Day of Resurrection the Qur'an and its people who used to implement it will be brought forth, preceded by Surah Al-Baqarah and Al `Imran.”
An-Nawwas said, "The Prophet (Sallallahu Alayhi wa Sallam) set three examples for these two Surahs and I did not forget these examples ever since. He said,
“They will come like two clouds, two dark shades or two lines of birds arguing on behalf of their people.”
It was also recorded in Sahih Muslim and At-Tirmidhi narrated this Hadith, which he rendered Hasan Gharib.
Source: Tafsir ibn Kathir (Abridged)