Al-Fath ar-Rabbani 7685 — on What Has Been Reported Regarding Treating

Benefits: ... A disease afflicts the stomach due to which the digestive system is disturbed and food is not digested. For this, the Prophet sallallahu alayhi wa sallam prescribed a treatment: that the urine of camels mixed with the milk of she-camels should be given to drink, and such patients become healthy. As for the people of the tribe of ‘Ukl, when they came to Madinah Munawwarah and did not find the climate and environment of this sacred city suitable, their stomachs became swollen as a result. The Prophet sallallahu alayhi wa sallam prescribed for them this treatment: that they should go outside to the place where the camels were kept and drink the milk and urine of the she-camels. Thus, they did so and became healthy. Later, these people became apostates. Further details about them are found in Sahih al-Bukhari and Sahih Muslim.