Bukhari

Hadith Commentary:

Hafiz (rahimahullah) states:
And what is meant is the sale of fruits and grains before their goodness becomes apparent.
That is, the meaning of mukhabarah is to sell the crop in the field before it ripens, and this is impermissible.
The concept of muhaqalah is also the same.
The meanings of other related terms have already been explained in detail in their respective places.

Hadith Commentary:
(1)
According to this hadith, the Messenger of Allah (sallallahu alayhi wa sallam) forbade certain types of buying and selling in which there is a risk of loss or deception. Their details are as follows:
Muhaqalah is derived from "haql," which means cultivation. What is meant by this is selling wheat still in the ear for harvested wheat. This is prohibited because equality cannot be ascertained in such a transaction.
The word mukhadarah comes from "khadr," which means unripe crop or unripe fruit, that is, buying and selling fruits and grains before their suitability becomes apparent. However, it is permissible to sell unripe crops as fodder for animals. Similarly, it is permissible to sell carrots, radishes, turnips, onions, etc., while they are still in the ground.

(2)
It should be noted that muhaqalah and mukhadarah are also used interchangeably for each other.
The explanation of mulamasah and munabadhah has already been given. For example, if a sale is finalized merely by touching a bolt of cloth, without knowing whether it is cotton or silk, or similarly, by merely throwing something, the sale is considered concluded.
These types of transactions involve gambling, and there is a risk of both loss and deception in them; therefore, they have been prohibited.
Muzabanah is when dates on the tree or grapes on the vine are sold in exchange for dried dates or raisins; this too is prohibited. However, dates on the tree may be sold for ripe dates in the case of ‘ariyah, as we have previously explained.