"And had Allah not decreed for them the exile, He would have punished them," meaning: had Allah not ordained for them the exile to al-Sham, He would have punished them in this world with killing and captivity.
Muhammad said: It is said 'jala'u' (they departed/exiled) from their land, and 'ajlaytuhum' (I exiled them), and 'jalawtuhum' as well.