The “Qaem” or Imam Mahdi of the Shia will rule according to the Laws of David and the family of David, according to the Shia Hadith in Al-Kafi, the most reliable of the four books of Shia Hadith. All of the following Shia Hadith come from the same section in Al-Kafi reported by Al-Kulyani, located in Al-Kafi (Volume No.1, p.387-398):
Narrated Ali ibn Ibraheem -from his father-from ibn Abi Umair-from Mansour-from Fadhl al Aour-from Abi Ubaidah who reported:
“When the Qaem of the household of the Prophet appears, he will rule according to rule of David and Solomon.”
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’”
Ahmad–Ahmad ibn Muhammad–Ibn Mahboob–Hisham ibn Salim–Ammar as Saabati who reported: ‘On what will you rule if you are made the rulers.’ He replied: ‘By the rule of God 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.’”
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.”
Ahmad ibn Mahran[ra]–Muhammad ibn Ali–Ibn Mahboob–Hishaam bin Salim–Ammar as Saabati reported: “I asked Imam Abu Abdullah [as]: ‘By what will you rule?’ He replied: ‘By the rule of God, and by the rule of David.’”
Furthermore, the 12th Imam will speak in Hebrew:
Reported to us Ahmad ibn Muhammad ibn Saeed al Uqdah who said: Narrated to us Ali ibn al-Hasan at-Taymali who said: narrated to us al-Hasan and Muhammad the sons of Ali ibnu Yusuf, from Sa’daan ibnu Muslim, from rajaal, from al-Mufadhaal ibn Umar who said: Abu Abdullah [as] reported: “When the Imam Mahdi calls out, he will supplicate to God in Hebrew.” [Al-Ghaybaa of an Numani, p.326]
According to the Shia, the Jews will also be the followers of Imam Mahdi:
Sheikh al-Mufeed has reported in his Al-Irshaad from al=Mufadhaal ibnu Umar that Imam Abu Abdullah [as] has reported: “There will appear along with Imam Mahdi…people from the tribe of Moses.” [Al-Irshaad of al-mufeed at Tusi p.402]
According to Shia Hadith in Al-Kafi, the Hidden Imam learns from a book called al-Jafr, which contains the knowledge from the Israelites:
The Imams (a.s.) remained silent for a while and then said, “With us there is al-Jafr (the parchment). What do they know what al-Jafr is?” I then asked, “What is al-Jafr (the parchment or a container) ?” The Imams (a.s.) said, “It is a container made of skin that contains the knowledge of the prophets and the executors of their wills and the knowledge of the scholars in the past from the Israelites.” [al-Kafi, Hadith 635, Ch. 40, h 1]
All of these beliefs lead us to believe that the Shia’s 12th Imam is actually the Jewish Dajjal that the Prophet (صلّى الله عليه وآله وسلّم) warned us about, who would mislead many and create destruction on earth. This is who the Shia are waiting for. According to the evidence, this is what we know about their “Qaem”:
1. He will rule according to the system of the family of David, using the Talmud.
2. His language will be Hebrew.
3. His followers will be of the Jews and Israelites, for he is the king of the Jews.
4. The Hidden Imam learns from the Talmud which is contained in the “Jafr.”
Article Edited By: Ibn al-Hashimi, www.ahlelbayt.com