The Shia scholar, Muhammad Aal Kaashif al-Ghitaa said in his book (أصل الشيعة) "The Foundation of the Shia" (p. 77):

The wisdom of gradual (revelation) required the presentation of some of the rulings but concealment of others which he (alayhis salaam) left with his trustees, and each trustee in turn entrusts them to the one after him so that he may present and spread them at the time appropriate for them according to the requirements of wisdom, such as a specified generalization, or an absolution, or a restriction ... for hte Prophet (sallallaahu alayhi wa aalihi) would mention a generalization and would mention a specification (of it) after a period of time had elapsed in his life, and sometimes he may not even mention it at all, but would leave it to his trustee to announce at its appropriate time.

The Meaning of the Above

The trustees mentioned here (al-awsiyaa) refer to their twelve imaams, and they treat the statements of these imaams as revelation, which is stated also explicitly in their books. Hence, they ascribe to Ali (radiallaahu anhu) the following statement: "This (the Qur'an) is the silent Book of Allaah and I am the vocal Book of Allaah" (Al-Fusul al-Muhimmah Fee Usool al-A'immah p. 235 and also in Wasaa'il al-Shi'ah 27/34), and they have many statements which indicate this core doctrine of theirs, from them, their saying about their Imaams that they are (خزنة علم الله وعيبة وحي الله) "...the treasurers of the knowlege of Allaah, and the suitcase of Allaah's revelation..." (al-Kaafee 1/192, Basaa'ir al-Darajaat al-Kubraa, p. 61 of Abi Ja'far al-Saffaar, d. 290H), and also (حفظة سر الله) "... the guardians of the secret of Allaah ..." (Mustadrak al-Wasaa'il of al-Nooree 10/416 and al-Balad al-Ameen wal-Dar' al-Haseen, p. 297, of Ibrahim bin Ali al-Aamilee al-Kaf'ami, d. 905H ) and in another narration (ولا يدرك ما عند الله إلا بهم) "... that which is with Allaah cannot be known except through them ..." (I'laam al-Waraa bi A'laam al-Hudaa p. 270, of al-Fadl bin Hasan al-Tabarsi, d. 548H)

Built upon this, what is being said here is that the specification of the general in the Qur'an, or restriction of what is unqualified, or abrogation of what has been revealed, all of that is the right of the Shia Imaams and Scholars in each age and era, and this is upon their belief that divine legislation is continuous, and their Imaams and Scholars are essentially the divine authority who must be obeyed absolutely. This is a very clear resemblance to the Jewish Rabbis who hold the same authority of the Jews.

The Saying of al-Maazindaaree and al-Kulaynee

Muhammad Saalih bin Ahmad al-Maazindaaree (d. 1081H) one of their Shaykhs, said (in Sharh Jaami' alal-Kaafee 2/272-273):

It is permissible for whoever hears a hadeeth of Abu Abd Allaah Ja'far bin Muhammad al-Saadiq to report it (as the saying) of his father, or grandfather, or any of his forefathers (alayhim as salaam). Rather it is permissible to say, 'Allaah, the Exalted, said...' The hadeeth of every single one of the purified Imaams is the actual saying of Allaah, the Mighty and Majestic, and there is no discrepancy between their sayings, just as there is no discrepancy within the speech of Allaah, the Exalted.

And one of the major Shaykhs, al-Kulaynee said (in al-Kaafee 1/265), in a chapter heading:

Chapter: Relegating (tafweed) to the Messenger of Allaah (sallallaahu alayhi wa aalihi) and to the Imaams (alayhim as-salaam) in the affair of the religion.

Comments

All of the above indicate that the Shia believe divine revelation never ceased after the death of the Prophet (sallallaahu alayhi wasallam) but continued in the persons of their Imaams, whose sayings are considered the very saying of Allaah, the Exalted, in other words when they speak in matters of the religion, it is divine revelation. This is synonymous with how the Jewish Rabbis operate, considering themselves as divine authority on earth, and this is one of the scores of similarities between the deen of the Raafidah and the deen of the Jews. And there is no doubt that the intent behind this is to abolish and alter the deen and the akhaam of Islaam, and they fabricated lies, day and night, upon the Ahl al-Bayt as part of this evil design, and the one whom they lied most upon is Jafar al-Saadiq (radiallaahu anhu).