Al-Mustadrak 'ala al-Sahihayn (Arabic: ) or Mustadrak Al Hakim (Arabic: ) is a five volume hadith collection written by Hakim al-Nishapuri (Nishapur is located in Iran). He wrote it in the year AH 393 (1002-1003 CE), when he was 72 years old.
The statement of authenticity was not accepted by a number of prominent later Sunni scholars. Al-Dhahabi, a 14th century Sunni Shafi'i Islamic scholar made an abridged version of the collection named Talkhis al-Mustadrak where he commented on its authenticity. It has become the habit of scholars today working in the field of hadîth, when compiling them and determining their authenticity, to say things like "It is authenticated by al-Hâkim and al-Dhahabî concurs". In doing so, they are referring to al-Dhahabi's Talkhîs, his abridgement of the Mustadrak that is often published along with it in its margins.
Dhahabi also wrote:
The Mustadrak contains a good number of hadîth that conform to the conditions of authenticity of both (al-Bukhârî and Muslim) as well as a number of hadîth conforming to the conditions of either one of them. Perhaps the total number of such hadîth comprises half the book. There is roughly another quarter of the hadîth that have authentic chains of transmission, but that have something else about them or that have some defect. As for the rest, and that is about a fourth, they are rejected and spurious narrations that are unauthentic. Some of those are fabrications. I came to know of them when I prepared an abridgement of the Mustadrak and pointed them out.
It would have been better if al-Hakim had never compiled it."
Ibn Hajar al-Asqalani, a 15th century Sunni Islamic scholar states that Mawdu'at al-Kubra is as unreliable in its attributing the grade of being "forged" to certain ahadith as al-Hakim's Mustadrak is unreliable in its declaring the grade of "sound" or Sahih to many ahadith.
Talkhis al-Mustadrak' is an abridged version of Al-Mustadrak alaa al-Sahihain, written by al-Dhahabi. Al-Dhahabi in his Talkhis al-Mustadrak made an abridged version (a version with omitted material of the collection where he commented on its claimed authenticity). In that version, he added his comments on 1182 hadith. Al-Dhahabî in his encyclopedic Târikh al-Islam "The History of Islam" says the following in his biographical entry on al-Hâkim, wherein he speaks about his Mustadrak: "Some of those are fabrications. I came to know of them when I prepared an abridgement of the Mustadrak and pointed them out." Al-Dhahabî said of it: "It is a useful book. I had made an abridgement of it that is in considerable need of work and editing."
On at least three other occasions, al-Dhahabi citicised hadith he had not commented on in his Talkhîs. For example, when speaking about Mu`âwiyah b. Sâlih, he writes: "He is among those narrators whom Muslim accepts but not al-Bukhârî. You can see al-Hâkim relating this narrator's hadîth in his Mustadrak and say: 'This is according to the conditions of al-Bukhârî.' He repeatedly makes this mistake." However, when the same statement comes up in his Talkhîs, he says nothing about it .
There have been many prominent scholars who have assumed that al-Dhahabî's silence in his Talkhîs indicates his tacit approval of al-Hâkim's ruling, scholars of the caliber of al-Suyuti in al-Nukat al-Badî`ât (197) (15th century CE), al-Manâwî in Fayd al-Qadîr, and al-Husaynî in al-Bayân wa al-Ta`rîf. Many contemporary scholars follow this view as well, but some question that stance.