إِنَّهَا تَرْمِى بِشَرَرٍ كَٱلْقَصْرِ Qur’an Al-Mursalat (77:32)Innaha tarmee bishararin kaalqasri
Qasr: Fort, big building, palace. An alternative reading is Qasar, plural of Qasarat (-un), meaning bundies of wood used for fuel: Ibn Abbas apud Bukhari. I almost prefer this latter reading.