Sahih Bukhari
Sahih Bukhari Volume 004, Book 055, Hadith Number 566.
Hadith Section/Book: Sahih Bukhari Sahih Bukhari Book 55. Prophets
Narated By Abu Huraira : The Prophet said, "Allah has made an opening in the wall of the Gog and Magog (people) like this, and he made with his hand (with the help of his fingers).