Musnad Ahmad 27:1631

Yunus narrated to us, Hammad bin Salamah narrated to us, from Bishr bin Harb, I heard Ibn Umar saying: I heard the Messenger of Allah, may Allah bless him and grant him peace, saying: "O Allah, bless for us our Medina, and our *sa’* (measure), and our *mudd* (measure), and our Yemen, and our Sham." Then he faced the rising of the sun and said: "From here the horn of Satan rises; from here are the earthquakes and the tribulations."