 he said and the thickest part of it is its lower part and its left part. as for the thickest part of the lower part of the peritoneum it is so that it will be strong there to carry the viscera and to compensate for the weakness of the body caused by the two holes in it so that it will not be prone to perforation. as for the thickness of the dryness it is because the burning winds which are associated with the weakness of the spleen are more common there so its body there needs to be strong so that it will not be perforated by the force of the extension of those winds. and allah is the grantor of success.
قوله وأغلظه أسفله وأيسره. أما أغلظ أسفل الصفاق، فليكون هناك قويا على حمل الأحشاء وليتدارك بذلك ما يوجبه الثقبان اللذان فيه من وهن الجرم، فلا تكثر عروض الإنخراق له وأما غلظ اليبس فلأن الرياح المحرقة، وهي الملازمة لضعف الطحال يكثر هناك فيحتاج أن يكون جرمه هناك قويا لئلا ينخرق بقوة تمديد تلك الرياح. والله ولي التوفيق.