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

1ـ مُحَمَّدُ بْنُ يَحْيَى عَنْ مُحَمَّدِ بْنِ الْحُسَيْنِ وَأَحْمَدَ بْنِ مُحَمَّدٍ عَنْ مُحَمَّدِ بْنِ إِسْمَاعِيلَ عَنْ مَنْصُورِ بْنِ يُونُسَ عَنْ أَبِي الْجَارُودِ عَنْ ابي جعفر (عَلَيْهِ السَّلام) قَالَ إِنَّ الْحُسَيْنَ بن علي (عَلَيْهما السَّلام) لَمَّا حَضَرَهُ الَّذِي حَضَرَهُ دَعَا ابْنَتَهُ الْكُبْرَى فَاطِمَةَ بِنْتَ الْحُسَيْنِ (عَلَيْهِ السَّلام) فَدَفَعَ إِلَيْهَا كِتَاباً مَلْفُوفاً وَوَصِيَّةً ظَاهِرَةً وَكَانَ عَلِيُّ بن الحسين (عَلَيْهما السَّلام) مَبْطُوناً مَعَهُمْ لا يَرَوْنَ إِلا أَنَّهُ لِمَا بِهِ فَدَفَعَتْ فَاطِمَةُ الْكِتَابَ إِلَى عَلِيِّ بن الحسين (عَلَيْهما السَّلام) ثُمَّ صَارَ وَالله ذَلِكَ الْكِتَابُ إِلَيْنَا يَا زِيَادُ قَالَ قُلْتُ مَا فِي ذَلِكَ الْكِتَابِ جَعَلَنِيَ الله فِدَاكَ قَالَ فِيهِ وَالله مَا يَحْتَاجُ إِلَيْهِ وُلْدُ آدَمَ مُنْذُ خَلَقَ الله آدَمَ إِلَى أَنْ تَفْنَى الدُّنْيَا وَالله إِنَّ فِيهِ الْحُدُودَ حَتَّى أَنَّ فِيهِ أَرْشَ الْخَدْشِ.

1. Muhammad ibn Yahya has narrated from Muhammad ibn al-Husayn and Ahmad ibn Muhammad from Muhammad ibn Isma‘il from Mansur ibn Yunus from abu al-Jarud from abu Ja‘far (a.s.) who has said the following. “When al-Husayn ibn Ali (a.s.) was about to leave this world he called his eldest daughter, Fatima and gave her a sealed document and openly before the people his directive will. Ali ibn al-Husayn (a.s.) was ill with some internal illness and the people would see as dying. Fatima then gave the document to Ali ibn al-Husayn (a.s.). Thereafter, that document, by Allah, came to us, O Ziyad.” The narrator has said that he asked the the Imam (a.s.). “What is in that document, May Allah take my soul in service for your cause?” The Imam (a.s.) said, “In it there is all that the children of Adam needed from the day Allah created Adam to the end of the world. In it there is the law of penalties and even the rules of compensation for an scratch on a victim’s body.”