Al-Kāfi - Volume 1 > Tacit and Explicit Testimony as proof of abu ‘Abdallah Ja‘far ibn Muhammad al-Sadiq’s (a.s.) Divine Authority over the people after Muhammad ibn Ali ibn al-Husayn (a.s.)
Hadith #1

1ـ الْحُسَيْنُ بْنُ مُحَمَّدٍ عَنْ مُعَلَّى بْنِ مُحَمَّدٍ عَنِ الْوَشَّاءِ عَنْ أَبَانِ بْنِ عُثْمَانَ عَنْ أَبِي الصَّبَّاحِ الْكِنَانِيِّ قَالَ نَظَرَ أَبُو جَعْفَرٍ (عَلَيْهِ السَّلام) إِلَى أَبِي عَبْدِ الله (عَلَيْهِ السَّلام) يَمْشِي فَقَالَ تَرَى هَذَا هَذَا مِنَ الَّذِينَ قَالَ الله عَزَّ وَجَلَّ وَنُرِيدُ أَنْ نَمُنَّ عَلَى الَّذِينَ اسْتُضْعِفُوا فِي الارْضِ وَنَجْعَلَهُمْ أَئِمَّةً وَنَجْعَلَهُمُ الْوارِثِينَ.

1. Al-Husayn ibn Muhammad has narrated from Mu‘alla ibn Muhammad from al-Washsha’ from Aban ibn ‘Uthman from abu al-Sabbah al-Kinani who has said the following. “Abu Ja‘far (a.s.) looked at abu ‘Abdallah (a.s.) who was walking. The Imam (a.s.) said, ‘Do you see this (person)? This is of those about whom Allah, the Most Holy, the Most High, has said, “However, We have decided to grant a favor to the suppressed ones by appointing them leaders and heirs of the land,” (28:5):