Abdullah bin Mubarak عبد الله بن المبارك · Commercial Transactions (Kitab Al-Buyu)

"He said: If these classes differ, sell as you wish if payment is made on the spot."

The Messenger of Allah (ﷺ) forbade muhaqalah and muzabanah. Those who cultivate land are three: a man who has (his own) land and he tills it: a man who has been lent land and he tills the one lent to him; a man who employs another man to till land against gold (dinars) or silver (dirhams).