Sunan Ibn Majah, Chapter: The Chapters on Tribulations

that the Messenger of Allah (saw) said: that the Messenger of Allah (saw) said:"You will most certainly follow the ways of those who came before you, arm's length by arm's length, forearm's length by forearm's length, hand span by hand span, until even if they entered a hole of a mastigure (lizard) you will enter it too." They said: "O Messenger of Allah, (do you mean) the Jews and the Christians?" He said: "Who else?"