The Messenger of Allah (ﷺ) forbade muzabanah, muhaqalah and thunya except it is known.

I heard the Messenger of Allah (ﷺ) say: If any of you does not leave mukhabarah, he should take notice of war from Allah and His Apostle (ﷺ).

The Messenger of Allah (ﷺ) forbade mukhabarah. I asked: What is mukhabarah ? He replied: That you have the land (for cultivation) for half, a third, or a quarter (of the produce).

The Messenger of Allah (ﷺ) made an agreement with the people of Khaibar to work and cultivate in return for half of the fruits or produce.

The Prophet (ﷺ) handed over the Jews of Khaibar the palm trees and the land of Khaibar on condition that they should employ what belonged to them in working on them, and that he should have half of the fruits.

The Messenger of Allah (ﷺ) conquered Khaibar, and stipulated that all the land, gold and silver would belong to him. The people of Khaibar said: we know the land more than you ; so give it to us on condition that you should have half of the produce and we would have the half. He then gave it to them on that condition. When the time of picking the fruits of the palm-trees came, he sent 'Abd Allah b. Rawahah to them, and he assessed the among of the fruits of the palm-trees. This is what the people of Medina call khars (assessment). He used to say: In these palm-trees there is such-and-such amount (of produce). They would say: You assessed more to us, Ibn Rawahah (than the real amount). He would say: I first take the responsibility of assessing the fruits of the palm-trees and give you half of (the amount) I said. They would say: This is true, and on this (equity) stand the heavens and the earth. We agreed that we should take (the amount which) you said.

He said: He assessed, and after the words of kull safara' wa baida', he said: that is, gold and silver will belong to him.

When the Prophet (ﷺ) conquered Khaibar. He then narrated it like the tradition of Zaid (b. Abu al-Zarqa'). This version has: He then assessed the produce of the palm-trees and said: I take the job of picking the fruit myself, and I shall give you half of (the amount) I said.

The Prophet (ﷺ) used to send Abdullah ibn Rawahah (to Khaybar), and he would assess the amount of dates when they began to ripen before they were eaten (by the Jews). He would then give choice to the Jews that they have them (on their possession) by that assessment or could assign to them (Muslims) by that assignment, so that the (amount of) zakat could be calculated before the fruit became eatable and distributed (among the people).

When Allah bestowed Khaybar on His Prophet (ﷺ) as fay' (as a result of conquest without fighting), the Messenger of Allah (ﷺ) allowed (them) to remain there as they were before, and apportioned it between him and them. He then sent Abdullah ibn Rawahah who assessed (the amount of dates) upon them.

Ibn Rawahah assessed them (the amount of dates) at forty thousand wasqs, and when Ibn Rawahah gave them option, the Jews took the fruits in their possession and twenty thousand wasqs of dates were due from them.