يَنْبَاعُ مِنْ ذِفْرَى غَضُوبٍ جَسْرَةٍ زَيَّافَةٍ مِثْلِ الْفَنِيقِ الْمُكْدَمِ
The thick substance appears to flow from behind the ear of a vigorous, forceful, swift-moving she-camel, likened to a powerful male camel restrained at the nose.
Dhifrā is the area behind the ear; ghaḍūb means fierce-tempered, jasrah robust, and zayyāfah swift-striding. The fanīq mukaddam is a male camel controlled by restraint at the nose. The heated-liquid comparison begun in verse 32 reaches its point here.