Ayatul Kursi is verse 255 of Surah Al-Baqarah, one of the most beloved and most recited verses in the entire Quran.
It describes the greatness of Allah: that He is the Ever-Living, the Sustainer, that nothing escapes His knowledge, and that His authority covers the heavens and the earth. The Prophet (peace be upon him) said that whoever recites it after every obligatory prayer, nothing stands between him and Paradise except death (Sunan an-Nasa'i, authentic). He also said that reciting it at night keeps a person under Allah's protection until morning (Sahih al-Bukhari). Many Muslims memorize it first after Al-Fatihah.
- 2:255
ٱللَّهُ لَآ إِلَٰهَ إِلَّا هُوَ ٱلْحَىُّ ٱلْقَيُّومُ ۚ لَا تَأْخُذُهُۥ سِنَةٌۭ وَلَا نَوْمٌۭ ۚ لَّهُۥ مَا فِى ٱلسَّمَٰوَٰتِ وَمَا فِى ٱلْأَرْضِ ۗ مَن ذَا ٱلَّذِى يَشْفَعُ عِندَهُۥٓ إِلَّا بِإِذْنِهِۦ ۚ يَعْلَمُ مَا بَيْنَ أَيْدِيهِمْ وَمَا خَلْفَهُمْ ۖ وَلَا يُحِيطُونَ بِشَىْءٍۢ مِّنْ عِلْمِهِۦٓ إِلَّا بِمَا شَآءَ ۚ وَسِعَ كُرْسِيُّهُ ٱلسَّمَٰوَٰتِ وَٱلْأَرْضَ ۖ وَلَا يَـُٔودُهُۥ حِفْظُهُمَا ۚ وَهُوَ ٱلْعَلِىُّ ٱلْعَظِيمُ
Allahu laaa ilaaha illaa Huwal Haiyul Qaiyoom; laa taakhuzuhoo sinatunw wa laa nawm; lahoo maa fissamaawaati wa maa fil ard; man zal lazee yashfa'u indahooo illaa bi-iznih; ya'lamu maa baina aydeehim wa mww khalfahum wa laa yuheetoona bishai'im min 'ilmihee illaa bimaa shaaa'; wasi'a Kursiyyuhus samaawaati wal arda wa laa ya'ooduho hifzuhumaa; wa Huwal Aliyyul 'Azeem
真主，除他外绝无应受崇拜的；他是永生不灭的，是维护万物的；瞌睡不能侵犯他，睡眠不能克服他；天地万物都是他的；不经他的许可，谁能在他那里替人说情呢？他知道他们面前的事，和他们身後的事；除他所启示的外，他们绝不能窥测他的玄妙；他的知觉，包罗天地。天地的维持，不能使他疲倦。他确是至尊的，确是至大的。