Muwatta Imam Malik (Riwayat Ibn al-Qasim)

It is narrated from Sayyiduna Sufyan bin Zuhair (may Allah be pleased with him) that I heard the Messenger of Allah (peace and blessings be upon him) say: Yemen will be conquered, then a people will come (and leave Madinah), they will take their families and dependents with them, even though Madinah would be better for them if they knew. Iraq will be conquered, then a people will come who will travel taking their families and dependents with them, even though Madinah would be better for them if they knew. And Shaam will be conquered, then a people will come who will travel taking their families and dependents with them, and Madinah would be better for them if they knew. And Shaam will be conquered, then a people will come who will travel taking their families and dependents with them, and Madinah would be better for them if they knew.