Bai Al-Hissah/Hassah (بیع الحصاۃ)

Hasah is the sale done by throwing pebbles. It is conducted when a person throws a pebble in the direction of the product, he/she desires, but the problem is that he/she is obligated to buy the product where the stone lands regardless of the fact it lands on his/her required product or not. It is Haram (illegitimate) in Islam.