Musannaf Ibn Abi Shaybah

Hazrat Abu Huraira narrates from the Prophet (peace and blessings be upon him) that he said: "Today, a hole like this has been opened in the wall of Gog and Magog." And Wahb, the narrator, made the number ninety with his hand (according to Ibn al-Athir's statement, its form is such that the tip of the finger next to the thumb is joined to the base of the thumb so that only a small gap remains in between).