Sahih Muslim, 3805

Abu Huraira (Allah be pleased with him) reported:Two types of trarisactions have been forbidden (by the Holy Prophet), al-Mlulamasa and al-Munabadha. As far as Mulamasa transaction is concerned, it is that every one of them (the parties entering into transaction) should touch the garment of the other without careful consideration, and al-Munabadha is that every one of them should throw his cloth to the other and one of them should not see the cloth of his friend

Rapporté par Abu Huraira رضي الله عنه : Le Messager d’Allah ﷺ a interdit deux types de transactions : al-Mulamasa et al-Munabadha. La transaction Mulamasa consiste à ce que chaque personne touche le vêtement de l’autre sans l’examiner attentivement, et la Munabadha consiste à ce que chacun jette son vêtement à l’autre sans que l’un d’eux ne voie le vêtement de son partenaire