In fact, his response suggested that Islam does, indeed, allow for the stoning of women and he cited an authority at Islam Online for that position here:
Here is one of many similar remarks in that authoritative article written by Muslims for Muslims:
"there are many incidents in the Sunnah and the life of the Prophet (peace and blessings be upon him) in which the Prophet stoned the married adulterer and adulteress to death. This happened in the case of Ma`iz and the Ghamidi woman. All this makes it clear that the punishment is proven and authentic and is not debatable. "
Scarcely any other admitted belief of Islam shows so clearly that Mark Steyn was correct in assessing the risks posed to civilization by radical Islam.
The next time you hear someone talk about, "The Religion of Peace," picture a woman being stoned to death by a crowd of thugs.