فلا ينافي ما قدمناه من انه سنة لان المسنون إذا كان مؤكدا يسمى واجبا على ما بيناه في غير موضع
Thus, it does not contradict what we have previously stated, that it is a Sunnah, because a Sunnah that is strongly emphasized is also referred to as wajib (obligatory), as we have explained in other places.
Commentary #2