Regarding the righteous...
Regarding the righteous, then, they will enter into the everlasting paradise filled with blessings: ideal, material, spiritual and physical blessings. As for the evil, then, they will be entered into the hellfire. * * * The followers of the Ahlul-Bait, upon them be peace, in addition to these principles, believe in two other principles, they are: The Leadership (Imaamah) of The Twelve of The Messenger of Allah , prayers be upon him and his family.
The first of them is Ameerul-Mu’mineen Ali Ibn Abi Taalib and the last of them is Imam Al-Mahdi (may Allah, the Exalted, hasten his noble reappearance) who is now living and thriving. He will appear one day to fill all the world with equity and justice. Justice of Allah. We believe that Allah never does any injustice to anyone of his servants.
(We believe) the injustice of another either stems from ignorance or springs forth from impotence and Allah, Glorified is He, is knowledgeable of all things and capable of all things. We believe, in accordance with that, that all of mankind is free in their will, not compelled to obedience or disobedience. (We believe) that their destinies are in their own hands.
They will decide for themselves without compulsion and He does not bear blame for the sin of another nor does anyone bear the sin of the error of another. Nor is man punished for the crimes of another. We take our religious teachings, which bind all affairs and spheres of our individual and social lives, from the most probable of sources, the Qur’an.
We believe that the Noble Qur’an was and continues to be protected in its verses from additions and deductions and is safe from change and alteration. After the Qur’an, we adhere to the customs (Sunnah) of the Most Noble Messenger, may the Blessings of Allah be upon him, then, (to the customs) of his infallible successors, upon them peace, who received their knowledge from the Messenger of Allah, may the Blessings of Allah be upon him and his family, without any means or with a means.
We attribute this position to the words of the Messenger of Allah, may the Blessings of Allah be upon him and his family, all of the well named authors have mentioned it and his saying is well known: “I feel that I'm being summoned and I must respond. Surely, I am leaving behind for you two weighty things: the Book of Allah and my descendants.