that the Messenger of Allah (ﷺ): "For everything there is a hump (pinnacle) and the hump (pinnacle) of the Qur'an is Surat Al-Baqarah, in it there is an Ayah which is the master of the Ayat in the Qur'an; Ayat Al-Kursi."
Jami` at-Tirmidhi Book 45, Hadith 4