Knowledge
اللَّهُ لَا إِلَهَ إِلَّا هُوَ الْحَيُّ الْقَيُّومُ - مَنْ قَرَأَهَا فِي دُبُرِ كُلِّ صَلَاةٍ مَكْتُوبَةٍ لَمْ يَمْنَعْهُ مِنْ دُخُولِ الْجَنَّةِ إِلَّا أَنْ يَمُوتَ
Translation
Allah, there is no deity except Him, the Ever-Living, the Sustainer - Whoever recites Ayatul Kursi after every obligatory prayer, nothing prevents him from entering Paradise except death.
Narrator
Abu Umamah
Source
Sunan al-Nasa'i
Nasa'i 9928