Hadith

Narrated Ibn 'Umar: In the pre-lslamic period of ignorance the people used to bargain with the meat of camels on the principle of Habal-al-Habala which meant the sale of a she-camel that would be born by a she-camel that had not yet been born. The Prophet forbade them such a transaction.

Vol: 005 Book: 058 Hadith: 183