Quote: Volume 8, Book 82, Number 794:
Narrated Anas:
Some people from the tribe of 'Ukl came to the Prophet and embraced Islam. The climate of Medina did not suit them, so the Prophet ordered them to go to the (herd of milch) camels of charity and to drink, their milk and urine (as a medicine).
I don't know. I kind of get the impression that this one started when the leaders were partying after dinner and one said "hey, let's see if we can get these assholes to drink camel piss. We'll tell them that Mohammed said its okay!"