Sahih Muslim | Book 1 | Chapter 66

Narrated by Abu Huraira
It is narrated on the authority of Abu Huraira that the Messenger of Allah (may peace be upon him) said: Islam initiated as something strange, and it would revert to its (old position) of being strange, so good tidings for the stranger.

Narrated by Ibn 'Umar ('Abdullah b. 'Umar)
It is narrated on the authority of Ibn 'Umar ('Abdullah b. 'Umar) that the Messenger of Allah (may peace be upon him) observed: Verily Islam started as something strange and it would again revert (to its old position) of being strange just as it started, and it would recede between the two mosques just as the serpent crawls back into its hole.

Narrated by Abu Huraira
It is narrated on the authority of Abu Huraira that the Messenger of Allah (may peace be upon him) said: Verily the faith would recede to Medina just as the serpent crawls back into its hole.