The meaning of devastation

1. My father, may Allah grant him mercy, said: We were told by Sa’d bin Abdullah, from Ahmad bin Muhammed bin Isa, from Muhammed bin Khalid al-Barqi, from the one he mentioned, from Hafs bin Ghiyath, from Abu Abdillah, peace be upon him, with regards to the saying of Allah, Exalted and Glorious is He: «And all of them, We devastated a (complete) devastation» (25:39). He said