The cellar (sardab) of Samera has been a part of, and a place in the house and residence of Imam al- Hadi, and next Imam Hasan al- Askari (p.b.u.t). That house was the place of birth of Imam al- Mahdi (p.b.u.t). His holiness spent his childish years over there. In fact, it has been the place of worship and praying of three highly respected, divinely appointed, and infallible Imams. Therefore, that holy place is highly regarded by the Shia peoples. Some of the radical Sunni writers have claimed from the 7th A.H. century on (eight centuries ago), that the Shia people believe that their 12th Imam, Imam al-Mahdi is hidden in that cellar. So, the Shia groups go to that place, day by day, and invite their Imam to come out of the cellar! The writer, who is one of the contemporary scholars of Najaf, has traced this claim in the popular Sunni works written by Yaqout al- Hamavi, Ibne Athir, Ibne Khallakan, al- Qazwini, Ibne Taimiya, Ibne Qayyam jouzi, Safi ad- din Hanbali, Ibne Batouta , and al- Qermani al- Demashsqi. They lived during the 7th A.H. century and there after. Despite the above writers, we do not observe such views and statememts in the books and works of the Sunni historians and writers who lived before the 7th century (A.H), such as Ibne Houqel, al- Bash’shari, al-Moqaddasi, Ibne Jobair, etc. The interesting point is that the first responses and reactions to such negative observations have been given by the Shia scholars in the 7th century.From the recent Shia scholars, the late traditionist, Mohaddeth Nouri has provided comprehensive answers to those Sunni claims, and has also stated that the said cellar in Samera had been restored by the order of the governing Abbasside Caliph, al- Naser le din- ellah, in 606 A. H.