The Messenger of Allah (PBUH) forbade the practice of muzabanah. Muzabanah is the sale of fruit for dates by measure and the sale of grapes for raisins by measure.

The Messenger of Allah (PBUH) forbade the practice of muzabanah. Muzabanah is to sell what is on the tops of palm trees for a specified measure of dates. If it [dates] weigh more [than what is on the top of the palm tree], it is mine, and if it weigh less, it is my responsibility [and I will take it anyway].

The Messenger of Allah (PBUH) forbade muhaqalah (exchanging unharvested crops for a specific measure of a ripe equivalent), muzabanah (exchanging an estimated measure of fruit still on a tree for the same measure of ripe equivalent), mu'awamah (selling crops one or more years ahead), and mukhabarah (renting a land for a third or a quarter of its yield). One of them said: The sale of years is mu'awamah. He also forbade thunyah (a busuness transaction on a condition that seller is entitled to take back what he sold whenever he returns the payment, or a business transaction involving an unspecified exclusion), but permitted the ’areyyah.