Sunan Abu Dawud
4638
Daif Isnaad Maqtu+3

Makhul said:The Romans will enter the Levant and stay there for forty days, and no place will be saved from them but Damascus and 'Uman

Daif Isnaad MaqtuAl-Albani
Daif Isnaad MaqtuMuhammad Muhyi Al-Din Abdul Hamid