Narrated 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).

Narrated Ibn `Abbas: Allah's Apostle performed the Tawaf (around the Ka`ba while riding his camel, and every time he reached the corner (of the Black Stone) he pointed at it with his hand and said, "Allahu Akbar." (Zainab said: The Prophet said, "An opening has been made in the wall of Gog and Magog like this and this," forming the number 90 (with his thumb and index finger).

Narrated Abu Huraira: The Prophet said, "A hole has been opened in the dam of Gog and Magog." Wuhaib (the sub-narrator) made the number 90 (with his index finger and thumb).