Abu Sa'id al-Khudri · Sales and Trade

We used to be given mixed dates (from the booty) and used to sell (barter) two Sas of those dates) for one Sa (of good dates). The Prophet (ﷺ) said (to us), "No (bartering of) two Sas for one Sa nor two Dirhams for one Dirham is permissible", (as that is a kind of usury). (See Hadith No. 405).

Allah's Messenger (ﷺ) forbade the selling by Munabadha, i.e. to sell one's garment by casting it to the buyer not allowing him to examine or see it. Similarly he forbade the selling by Mulamasa. Mulamasa is to buy a garment, for example, by merely touching it, not looking at it.

The Prophet (ﷺ) forbade two kinds of dresses and two kinds of sale, i.e., Mulamasa and Munabadha.

(Concerning exchange) that he heard Allah's Messenger (ﷺ) saying, "Do not sell gold for gold unless equal in weight, and do not sell silver unless equal in weight."

Allah's Messenger (ﷺ) said, "Do not sell gold for gold unless equivalent in weight, and do not sell less amount for greater amount or vice versa; and do not sell silver for silver unless equivalent in weight, and do not sell less amount for greater amount or vice versa and do not sell gold or silver that is not present at the moment of exchange for gold or silver that is present.

Allah's Messenger (ﷺ) forbade Muzabana and Muhaqala; and Muzabana means the selling of ripe dates for dates still on the trees.

that while he was sitting with Allah's Messenger (ﷺ) he said, "O Allah's Messenger (ﷺ)! We get female captives as our share of booty, and we are interested in their prices, what is your opinion about coitus interrupt us?" The Prophet (ﷺ) said, "Do you really do that? It is better for you not to do it. No soul that which Allah has destined to exist, but will surely come into existence.