Sahih al-Bukhari Book 34, Hadith 95
Allah's Messenger (ﷺ) forbade the sale called 'Habal-al-Habala which was a kind of sale practiced in the Pre-
Islamic Period of ignorance. One would pay the price of a she-camel which was not born yet would be
born by the immediate offspring of an extant she-camel.
Allah's Messenger (ﷺ) forbade Najsh.
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.