fourth if it were not for the ribs the structure of the bodys oven would not be strong and the chest and what is below it would be quickly compressed and affected by collisions and the like.
ورابعها أنه لولا الاضلاع لكان تركيب تنور البدن غير قوي فيكون الصدر وما دونه سريع الانضغاط والانفعال عن المصادمات ونحوها.