Imam Muhammad bin Abd Allah al-Hakim al-Nisaburi's (d.405/1014) addendum to al-Buhkari and Muslim's hadith collections- using their methodology of accepting and fully grading the hadith. This recently released collection is in 11 volumes, with full diacritical markings (tashkil). Excellent version of the famous book al-Mustadrak. Contains 9060 hadith and had 1 volume with the narrators and authorities cited and a complete index of all hadith.