The Hadith of Najd is a famous hadith with several chains of narration about three geographical locations. While all Sunni Muslims accept the group of hadith as authentic, the exact location of the area referred to as "Najd" is disputed.
Hadith of Najd Wikipedia
According to two narrations in Sahih Bukhari, Muhammad asks Allah to bless the areas of Bilad al-Sham (Syria) and Yemen. When his companions said "Our Najd as well," he replied: "There will appear earthquakes and afflictions, and from there will come out the side of the head (e.g. horns) of Satan." In a similar narration, Muhammad again asked Allah to bless the areas Medina, Mecca, Sham, and Yemen and, when asked specifically to bless Najd, repeated similar comments about there being earthquakes, trials, tribulations, and the horns of Satan.
"O Allaah bestow your blessings on our Shaam. O Allaah bestow your blessings on our Yemen." The people said, "O Messenger of Allaah, and our Najd." I think the third time the Prophet, sallallaahu alayhi wa sallam, said, "There (in Najd) will occur earthquakes, trials and tribulations, and from there appears the Horn of Satan."