﴿ إِنَّهَا تَرْمِى بِشَرَرٍۢ كَٱلْقَصْرِ ﴾

“which – behold!- will throw up sparks like [burning] logs,”

Indeed it that is the Fire throws up sparks namely those flame that are thrown by it into the air huge like palace edifices in terms of their enormity and vertical extension