The traditions that indicate he is from the descendants of the two grandsons, al-Ḥasan and al-Ḥusayn, peace be on them
Comprised of 125 traditions
526. Zakhāīr al-`uqbā1: The Messenger of Allah, Allah’s blessings be on him [and his family], said: “From these two—meaning al-Ḥasan and al-Ḥusayn—is the Mahdī of this nation.”
527. Al-Mu`jam al-kabīr2: Narrated to us Muḥammad b. Ruzaiq b. Jāmi` al-Miṣrī, from al-Haytham b. Ḥabīb, from Sufyān b. `Uyayna, from `Alī b. `Alī al-Makkī al-Hilālī, from his father who recounts:
I went to the Messenger of Allah, Allah’s blessings be on him [and his family], during his sufferings in which he passed away. Fāṭima [peace be on her] was sitting near his head. She began crying until her voice rose. The Holy Prophet, Allah’s blessings be on him and his family, looked up to her and asked, “My beloved Fāṭima! Why are you crying?” She replied, “I fear neglect after you.” He replied, “My beloved Fāṭima! Do you not know that Allah, Mighty and Glorified be He, searched the earth thoroughly, then chose from it your father and sent him with His message.
Then, He searched the earth thoroughly and chose from it your husband. Then he revealed to me that I should marry you to him. O Fāṭima! Indeed Allah has granted us Ahl al-Bait seven characteristics that have not been given to anyone before us nor to anyone after us: I am the seal of the Prophets, the noblest of Prophets in front of Allah, the most beloved of the creatures to of Allah, Mighty and Majestic be He, and I am your father. My heir (waṣī) is the best of heirs and the most beloved of them to Allah and he is your husband. Our martyr is the best of martyrs and the most beloved of them to Allah and he is Ḥamzat b. `Abd al-Muṭṭalib, the (paternal) uncle of your father and the (paternal) uncle of your husband.
From us is the one who has two green wings by which he flies where he wishes in Paradise along with the angels and he is the cousin of your father and the brother of your husband. From us are the two grandsons of this nation and they are your two sons—al-Ḥasan and al-Ḥusayn—and they are the masters of the youths of Paradise. I swear by the One Who truly sent me, their father is better than both of them. O Fāṭima! I swear by the One Who sent me with truth, surely from these two is the Mahdī of this nation.
When the world becomes engulfed in chaos and turmoil, fitnas appear, the paths are cut-off, and people will loot each other. And when there will be no elder who will have mercy on the young and there will be no young who will respect the elders. Then, Allah, Mighty and Majestic be He, will send from the two of them [i.e. al-Ḥasan and al-Ḥusayn] a man who will conquer the forts of deviation and the shrouded hearts. He will rise with religion in the end of times just as I rose with it in the first era. He will fill the earth with justice just as it will be filled with injustice.
O Fāṭima, Don’t grieve and don’t cry, for surely, Allah, Mighty and Majestic be He, is more merciful and kinder to you than me. This is because of your position to me and your [close] place to my heart. Allah has married you to your husband while he possesses the most noble lineage amongst [the members] of your family, is the most honorable of them in position, the most merciful of them with the people, the most just of them in being fair, and the most insightful of them in judgment. I asked my Lord, Mighty and Majestic be He, that you be the first to join me from my Ahl al-Bait [after my death].” `Alī, [peace be on him,] said, “When the Holy Prophet, Allah’s blessings be on him [and his family], passed away, Fāṭima, peace be on her, did not live after him for more than seventy-five days, and Allah, the Exalted, took her to him.”
528. Al-Amālī al-Shaykh3: In a lengthy tradition through his chains of narrators from Imam `Alī b. al-Ḥusayn, peace be on him, which includes Jābir honoring Imam al-Ḥasan and Imam al-Ḥusayn, peace be on them . . . to where Jābir said:
One day, the Messenger of Allah, Allah’s blessings be on him and his family, was with us in the mosque and was surrounded by the people, when he said to me, “O Jābir! Call Ḥasan and Ḥusayn for me,” and he was extremely fond of both of them. I went and called them and carried them in my arms—in turns—until I we reached him. He asked me—and I could see the joy in his face on seeing me being so affectionate towards both of them and my respect for them—“Do you love them, O Jābir?” I replied, “And what would prevent me from that while I know their stature with you, may my father and my mother be sacrificed for you?”
He said, “Should I not inform you about their virtues?” I replied, “Yes! May my parents be sacrificed for you!” He said, “When Allah, the Exalted, intended to create me, He created me as a pure white liquid (nutfa) which He placed in the loin of my father Adam, peace be on him. This liquid was continuously transferred from one pure loin to another pure womb until [it reached] Noah and Abraham, peace be on them. This continued to `Abd al-Muṭṭalib, thus, nothing from the filth of ignorance (jāhiliyya) touched me.
Then, this liquid was split into two halves: One went to `Abd-Allah and the other to Abū Ṭālib. I was born to my father [`Abd-Allah] and Allah sealed prophethood through me. `Alī was born to Abū Ṭālib and waṣiyya4 became terminated through him. These two halves—from me and `Alī—came together and resulted in the birth of al-Jahr and al-Jahīr (i.e. al-Ḥasan and al-Ḥusayn) and through them,
He sealed the grandsons of prophethood. He placed my seed (al-dhurriya) in both of them and ordered me to conquer the city—or cities—of disbelief. From his seed—pointing to al-Ḥusayn, peace be on him—a person will emerge in the end of times. He will fill the earth with justice just as it will be filled with unfairness and injustice. These two are the pure and purified ones. They are the masters of the youths of Paradise. Salvation is for those who love them, their father, and their mother, and woe to those who fight them and have hatred towards them.”
The traditions with the following numbers also show the aforementioned concept: 94–160, 463, 464, 465, 543, 546–548, 550–571, 590, 608, 641, 770, and 786–807.