his saying with a cloud means it rose and some of the darkness of the night remained before dawn. and the sperm has dried up meaning the waters and the remaining waterpreserving substances have dried up from the surface of the earth. and when the remaining water has dried up then the rest of it has dried up. and they return from the deserts to their camps when the pleiades rise in the morning and when they advance a little before dawn with some of the darkness remaining. and they begin to return from the rising of the two conditions/ until this time. and i will mention that in the chapter on their beginnings god willing.
قوله بسدفة يريد طلعت وقد بقى من سواد الليل شىء قبيل الفجر. و نشت النطاف يعنى نضبت المياه و المبقيات الحافظات للماء من جلد الأرض. وإذا نضب ٤ ماء المبقيات، فغيره أنضب. وهم يرجعون عن البوادى إلى محاضرهم إذا استقلت الثريا بالغداة، وإذا تقدمت للفجر قليلا ببقية من السواد. ويبتدئون فى الرجوع من طلوع الشرطين/ إلى هذا الوقت. وسأذكر ذلك فى باب تبديهم ان شاء الله.