Al-Kāfi

Hadith 467
twelve-imams
5ـ الْحُسَيْنُ بْنُ مُحَمَّدٍ عَنْ مُعَلَّى بْنِ مُحَمَّدٍ عَنْ مُحَمَّدِ بْنِ جُمْهُورٍ عَنْ فَضَالَةَ بْنِ أَيُّوبَ عَنْ مُعَاوِيَةَ بْنِ وَهْبٍ عَنْ ذَرِيحٍ قَالَ سَأَلْتُ أَبَا عَبْدِ الله (عَلَيْهِ السَّلام) عَنِ الائِمَّةِ بَعْدَ النَّبِيِّ (صَلَّى اللهُ عَلَيْهِ وَآلِه) فَقَالَ كَانَ أَمِيرُ الْمُؤْمِنِينَ (عَلَيْهِ السَّلام) إِمَاماً ثُمَّ كَانَ الْحَسَنُ (عَلَيْهِ السَّلام) إِمَاماً ثُمَّ كَانَ الْحُسَيْنُ (عَلَيْهِ السَّلام) إِمَاماً ثُمَّ كَانَ عَلِيُّ بْنُ الْحُسَيْنِ إِمَاماً ثُمَّ كَانَ مُحَمَّدُ بْنُ عَلِيٍّ إِمَاماً مَنْ أَنْكَرَ ذَلِكَ كَانَ كَمَنْ أَنْكَرَ مَعْرِفَةَ الله تَبَارَكَ وَتَعَالَى وَمَعْرِفَةَ رَسُولِهِ (صَلَّى اللهُ عَلَيْهِ وَآلِه) ثُمَّ قَالَ قُلْتُ ثُمَّ أَنْتَ جُعِلْتُ فِدَاكَ فَأَعَدْتُهَا عَلَيْهِ ثَلاثَ مَرَّاتٍ فَقَالَ لِي إِنِّي إِنَّمَا حَدَّثْتُكَ لِتَكُونَ مِنْ شُهَدَاءِ الله تَبَارَكَ وَتَعَالَى فِي أَرْضِهِ.
5. Al-Husayn ibn Muhammad has narrated from Mu‘alla ibn Muhammad from Muhammad ibn Jaumhur from Faddala ibn Ayyub from Mu‘awiya ibn Wahab from Dhurayh who has said the following. “I asked abu ‘Abdallah (a.s.) about the Imams after the Holy Prophet (s.a.).” The Imam (a.s.) said, “Amir al-Mu’minin (Ali) (a.s.) was the Imam. Then al-Hassan (a.s.) was the Imam. Then al-Husayn (a.s.) was the Imam. Then Ali ibn Al-Husayn (a.s.) was the Imam. Then Muhammad ibn Ali (a.s.) was the Imam. One who would deny this would be as if he has denied the existence of Allah, the Most Holy, the Most High, and the truthfulness of Prophet Muhammad (sw).” I asked, “may Allah take my soul in service for your cause, are you then the Imam? I repeated it three times.” The Imam said, “I only said it to you so that you will be of the witnesses before Allah, the Most Holy, the Most High, on His earth.”
Source: Shaykh Muḥammad b. Yaʿqūb al-Kulaynī