So, when they had angered Us, We took vengeance on them, and We drowned them all together;
When at length they provoked Us, We exacted retribution from them, and We drowned them all.
فَلَمَّا آسَفُونَا (So, when they provoked our anger, - 43:55). Since Allah Almighty is pure of the states of anger and sorrow, the meaning is that their behavior caused Us to decide that they should be punished. (Ruh-ul-Ma’ ani)