Abu Huraira (May God be pleased with him) narrates: The Prophet (Peace and Blessings be Upon Him) said:

“Everything has its pinnacle and the pinnacle of the Qur'an is Surah al-Baqarah (Surah al-Baqara). In it there is a verse which is the greatest in the Qur'an: Ayatal-Kursi (The Throne Verse)”.

(Tirmidhi, Reward of the Qur’an 2)