Hadith No: 1
Allama Majlisi - Bihar al-Anwar
Volume: (36) - Page Number: (284)
[The text is lengthy, so only the relevant excerpt is provided here]
- .... He said: Yes, my successor and the khalifah after me will be Ali ibn Abi Talib, and after him, my grandsons Hasan and Husayn, followed by nine imams from the lineage of Husayn, all righteous. He said: O Muhammad, then name them for me. He said: Yes, when Husayn passes away, his son Ali will be his successor. Then, when Ali passes away, his son Muhammad will succeed him. When Muhammad passes away, his son Jafar will follow. Then, when Jafar passes away, his son Musa will be next. After Musa, his son Ali will come, and when Ali passes away, his son Muhammad will succeed him. Then, when Muhammad passes away, his son Ali will follow. After Ali, his son Hasan will be next, and when Hasan passes away, his son Al-Hujjah ibn al-Hasan ibn Ali will be the successor. These are twelve imams, corresponding to the number of the leaders among the Children of Israel. He said: And where will they be stationed in Paradise? He replied: With me in my degree.

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Reference: Behaar al-Anwaar Book 36

Hadith No: 2
Al-Allamah al-Majlisi - Bihār al-Anwār
Volume: (36) - Page Number: (351)
221 - Text: Al-Husayn ibn Ali from Harun ibn Musa from Muhammad ibn Isma'il al-Fuzari from Abdullah ibn al-Salih, the scribe of al-Layth, from Rushd ibn Sa'd, from al-Husayn ibn Yusuf al-Ansari, from Sahal ibn Sa'd al-Ansari, who said: I asked Fatimah, the daughter of the Messenger of Allah (peace be upon him and his holy progeny), about the Imams, and she said: The Messenger of Allah (peace be upon him and his holy progeny) used to say to Ali (peace be upon him): "O Ali, you are the Imam and Caliph after me, and you are more deserving of the believers than themselves." And when I am gone, your son al-Hasan will be more deserving of the believers than themselves, and when al-Hasan is gone, al-Husayn will be more deserving of the believers than themselves. When al-Husayn is gone, his son Ali ibn al-Husayn will be more deserving of the believers than themselves, and when Ali is gone, his son Muhammad will be more deserving of the believers than themselves. When Muhammad is gone, his son Ja'far will be more deserving of the believers than themselves, and when Ja'far is gone, his son Musa will be more deserving of the believers than themselves. When Musa is gone, his son Ali will be more deserving of the believers than themselves, and when Ali is gone, his son Muhammad will be more deserving of the believers than themselves. When Muhammad is gone, his son Ali will be more deserving of the believers than themselves, and when Ali is gone, his son al-Hasan will be more deserving of the believers than themselves. When al-Hasan is gone, the Qaim al-Mahdi will be more deserving of the believers than themselves; Allah will open through him the east and west of the earth. They are the Imams of truth and the sunni of sincerity, aided is whoever aids them, and failed is whoever fails them.

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Reference: Behaar al-Anwaar Book 36