The Twelth Imam (Al-Mahdi Al-Qaim) will rule according to the Laws of David and the family of David

Al-Kulayni reports in his work al-Kafi, volume no.1, p.397-398:

a)Narrated Ali ibn Ibraheem -from his father-from ibn Abi Umair-from Mansour-from Fadhl al Aour-from Abi Ubaidah who reported: “During the times of Imam Jaffar[as] we used to go around like herds without a caretaker. We met with Salim ibn Abi Hafs who asked me: ”Oh Abu Ubaidullah, who is your Imam?” I replied:” My Imams are from the household of the prophet”. He then stated: “You have perished and so have I for both of us have heared Abu Jafar[as] saying: “One who dies without recognizing his Imam, he dies a death of Jahiliyyah.” Then I affirmed what he said. It was before that three or somewhat close to it(time span) when I entered upon Abu Abdullah[as] and God granted me knowledge. Then I said to Abu Abdullah[as]: “Salim said such and such.” He replied: “Oh Abu Obaidah nobody here will die until he is succeeded by some one who does the same thing as his, and adopts the similar manners of his predecessor, and calls to the same thing as his predecessor did. Oh Abu Ubaidah, it was permitted that whatever was given to David was also provided for Sulaiman.” Then he added: “Oh Abu Ubaidah when the Qaem of the household of the prophet appears, he will rule according to rule of David and Solomon.”

b) Muhammad ibn Yahya-Ahmad ibn Muhammad-Muhammad ibn Sinaan-Abaan who reported: “I heard Abu Abdullah[as] saying: “The world will not fade away unless a person from us appears who will rule according to the rule of the family of David and he will not ask his house. He will give every one his right.

c) Ahmad--Ahmad ibn Muhammad--Ibn Mahboob--Hisham ibn Salim--Ammar as Saabati who reported: “I asked Abu Abdullah [as] : “On what will you rule if you are made the rulers.” He replied: “By the rule of Allah and the rule of David. And if we are confronted by a situation which we cannot solve, Gabriel (Ruh al Quds) will reveal it to us.”

d) Muhammad ibn Ahmad--Muhammad ibn Khalid--Nazr ibn Suwaid--Yahya al Halabi--Imran ibn Oueiyn--Jaeed al Hamdani--Ali ibn al-Hussein[as] said: “I asked him by which law will you rule?” He said: “By the rule of David, and if there is something which we are unaware of, Gabriel(Ruh al Quds) will reveal it to us.”

e) Ahmad ibn Mahran[ra]--Muhammad ibn Ali--Ibn Mahboob--Hishaam bin Salim--Ammar as Saabati reported: I asked Imam Abu Abdullah[as] :“What is the status of the Aimmah.” He replied : “It is similar to the status of Dhul Qarnain, Ushegh, and Asef the companion of prophet Sulaiman.” Then I asked: “By what will you rule?” He replied: “By the rule of God, by the rule of David, and by the rule of the Prophet Muhammad[saw] and by the revealation of Gabriel.

Link:
Keyakinan Al-Ghaibah (persembunyian Al-Mahdi) pada akhirnya mengarah kepada penghapusan syariat Syiah
Untuk diganti dengan Syariat Daud dan Talmud apabila Al-Mahdi Syiah muncul?