Once again the subject of the Najd came up today, and I hunted down the hadith. Very interesting essay around it.

Misc. Articles - Intermediaries of Shirk by Sayyid Maliki:

‘The Prophet (s.w.s.) mentioned: “O Allah, give us baraka in our Syria, O Allah, give us baraka in our Yemen.” They said: “And in our Najd?” and he said: “O Allah, give us baraka in our Syria, O Allah, give us baraka in our Yemen.” They said: “And in our Najd?” and I believe that he said the third time: “In that place are earthquakes, and seditions, and in that place shall rise the devil’s horn [qarn al-shaytan].”’

Very compelling arguments.