VIRTUES OF AYATAL KURSI
He (peace be upon him) again said: 'Do you know which Ayah in Allah's Book, according to you, is the greatest?' I replied: ‘It is 'Allah la ilaha illa Huwal-Hayyul-Qayyum'.[2:255].
Thereupon he (peace be upon him) patted me in the chest and said, ' Rejoice by your knowledge, O Abu Mundhir! (i.e, may this knowledge be a source of respect, honour and benefit to you)'."
[Muslim, Reproted by Imam Ahmad also with some words changed]
3. Asma' bint Yazid (radiAllahu anhu) reported, ' I heard the Messenger of Allah (peace be upon him) say about these two following Ayahs, i.e, verses: "Allah! There is no god but He - the Living, The Self-subsisting, Eternal. [2:255], And, Alif Lam Mim, Allah! There is no god but He - the Living, The Self-subsisting, Eternal [3:1-2], That they contain Allah's Greatest Name."
[Imam Ahmed bin Hanbal in his Musnad]
Abu Umamah Al-Bahili (may Allah be pleased with him) reported: The Prophet (peace be upon him) said: "The one who recites it after each of the obligatory prayers, then death will be the only thing preventing him from entering Paradise."
[ Ibn Hibban]
Abu Dhar said; O Messenger of Allah, what is the greatest thing that has been revealed to you?’ He said, Ayat al-Kursi, 'Allah! La ilaha illa Huwa'
When you lie down in your bed, recite ayat al-Kursi, Allah! La ilaha illa Huwa (none has the right to be worshipped but He), the Ever Living, the One Who sustains and protects all that exists… [al-Baraqah 2:255] until the end of the ayah, then you will have a protector from Allah and no shaytan (devil) will come near you until morning comes