This Is My Faith - Al-fatlawi, Ali - الصفحة ٢٨٢ - Imam Al-Mahdi (AHHR)?

Hasan: I would also like to add that the existence of the Imam and his being is a fact taken for granted by most of the Muslims due to what is reported from the Messenger of Allah (PBUH) and the Pure offspring (PBUT): “Whoever dies without knowing the Imam of his time, he dies in a state of ignorance”.

It is also reported from Om Salamah that the Prophet Mohammad (PBUH) said: “When I was carried to the heaven, I looked and it was written on the Throne: ‘There is no God but Allah, Mohammad is the Messenger of Allah, I supported him through Ali and I grant him victory through Ali’, as I saw the lights of Ali, Fatimah, Al-Hasan, Al-Husain, and the lights of Ali Bin Al-Husain, Mohammad Bin Ali, Ja’far Bin Ali, Mosa Bin Ja’far, Ali Bin Mosa, Mohammad Bin Ali, Ali Bin Mohammad, Al-Hasan Bin Ali, and I saw the light of Al-Hojja shining among them as if it were a glittering star. So, I asked my Lord what it was. I was told ‘O Mohammad! These are the lights of Ali, Fatimah, and your grandsons’ lights Al-Hasan and Al-Husain, and these are the lights of the Imams after you, the purified and infallible offspring of Al-Husain, as this is the light of Al-Hojja who will fill the earth with equity