The Book of Transactions (Kitab Al-Buyu`)
Muslim :: Book 10 : Hadith 3799
Jabir b. 'Abdullah (Allah be pleased with him) reported that Allah's Messenger (may peace be upon him) forbade the hiring of a Camel to cover a she-Camel and from selling water and land to be tilled. So from all this the Messenger of Allah (may peace be upon him) forbade.