In Hadith Sharif, Ayat-Ul-Kursi is the most beneficial Surah in the Quran.
Abi-Bin-Ka’ab narrated that, The Holy Prophet PBUH said: Abu Manzar Do you know? What is the most beneficial Surah in the Quran? I said: Allahu La Ilaha Illa Huwal Hayyul Qayom, Then the Holy Prophet PBUH said: Abu Manzar you have been blessed with your knowledge.
Ali Bin Abi Talib Narrated that, I have heard from the Holy Prophet PBUH. Whoever recites Ayat-Ul-Kursi after every Farz prayer. Nothing will stop him from going to paradise. When he died he will go to paradise immediately.
The person who recites Ayat-ul-Kursi before sleeping. His family, his house, and his neighbors will be safe from shaitan.
Abu Huraira narrated that, The Holy Prophet Mohammad PBUH ordered me to pay the Zakat revenue in Ramadan. Then somebody came to me and started stealing the foodstuff. I caught him and said: I will take you to Allah SWT Apostle. Then Abu Huraira described the whole narration and said: That person said to me. Please don’t take me to Allah SWT Apostle. I will tell you a few words by which Allah will reward you. When you go to your bed, recite Ayatul Kursi. There will be a guard from Allah SWT. Who will protect you the whole night till morning? Shaitan will not be able to come near you till dawn. When the Holy Prophet PBUH heard the story. He replied: He who came to you at night and told you the truth although he is a liar and he was Shaitan.
The Holy Prophet PBUH said: Whoever recites Ayatul Kursi after each prayer. Nothing can stop him from going to heaven except death.
Whoever recites Ayat-ul-Kursi when he goes outside. So, 70,000 angels will protect him until he will go back to his house.
Whoever recites Ayat-ul-Kursi and the last 2 verses of surah Baqarah in difficult times. Allah SWT solve his difficulty.