Ayat al-Kursi sits inside Surah Al-Baqara, the Quran's longest chapter, as its 255th verse, but Muslim devotional practice has always treated it as a self-contained unit rather than as one line among 286. Structurally it reads as a single sustained statement about divine attributes: God as ever-living and self-subsisting, unaffected by drowsiness or sleep, owner of everything in the heavens and the earth, and the one before whom intercession requires explicit permission rather than happening automatically. Its final lines describe a kursi, usually rendered "throne" or "footstool," whose extent covers the heavens and the earth without any weariness to its bearer.
That density of theological content in one verse is part of why it is treated differently from its surrounding text. Classical exegetes (mufassirun) devoted disproportionate attention to it relative to its length, parsing terms such as al-Hayy (the Ever-Living) and al-Qayyum (the Self-Subsisting) as a compact statement of tawhid, the oneness of God, that could stand alone as a teaching text independent of the legal and narrative material that surrounds it in Al-Baqara.
Because of that independence, this atlas records it as a portion in its own right, contained within Al-Baqara, alongside the surah and juz divisions already modeled, rather than only as a citation locator inside the chapter.