حَدَّثَنَا عَمْرُو بْنُ عَلِيٍّ، حَدَّثَنَا يَحْيَى، أَخْبَرَنَا سُفْيَانُ، حَدَّثَنِي عَبْدُ الرَّحْمَنِ بْنُ عَابِسٍ، سَمِعْتُ ابْنَ عَبَّاسٍ ـ رضى الله عنهما ـ ‏{‏تَرْمِي بِشَرَرٍ‏}‏ كُنَّا نَعْمِدُ إِلَى الْخَشَبَةِ ثَلاَثَةَ أَذْرُعٍ وَفَوْقَ ذَلِكَ، فَنَرْفَعُهُ لِلشِّتَاءِ فَنُسَمِّيهِ الْقَصَرَ‏.‏ ‏{‏كَأَنَّهُ جِمَالاَتٌ صُفْرٌ‏}‏ حِبَالُ السُّفْنِ تُجْمَعُ حَتَّى تَكُونَ كَأَوْسَاطِ الرِّجَالِ‏.‏

Narrated Ibn 'Abbas

(regarding) the explanation of "... It throwssparks as Al-Qasr ..." (V. 77:32):We used to collect logs of wood, threecubits long or longer, to store for heatingpurposes in winter, and we used to call it Al-Qasr, it also means a castle or a fort."As if they were Jimalatun Sufr (yellowcamels or bundles of ropes)" (V.77:33):means the ropes of a ship which are made inbundles till it become as wide as men's waists.