Abu Umamah reported: The Messenger of Allah, peace and blessings be upon him, said, “Whoever recites the ‘verse of the Throne’ (ayat al-kursi)after every prescribed prayer, there will be nothing standing between him and his entry into Paradise but death.”
Source: al-Mu’jam al-Kabīr 7406
Grade: Sahih (authentic) according to Al-Albani
عَنْ أَبِي أُمَامَةَ قَالَ قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ مَنْ قَرَأَ آيَةَ الْكُرْسِيِّ دُبُرَ كُلِّ صَلَاةٍ مَكْتُوبَةٍ لَمْ يَمْنَعْهُ مِنْ دُخُولِ الْجَنَّةِ إِلَّا أَنْ يَمُوتَ
7406 المعجم الكبير للطبراني باب الصاد من اسمه الصعب
6464 المحدث الألبان