قَلِقَتْ رِحَالَتُهَا وَأَسْبَلَ نَحْرُهَا وَابْتَلَّ مِنْ زَبَدِ الْحَمِيمِ حِزَامُهَا
Her saddle began to shift, sweat ran down her neck, and her girth was soaked with the froth of hot perspiration.
Riḥālah denotes riding gear or saddle, while ḥizām is the girth around the body. Asbala naḥruhā evokes sweat streaming from the neck. Here zabad al-ḥamīm concerns frothy, heated perspiration, not drinking water.