It is narrated from Sayyiduna Abu Sa'id Khudri (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him and his family) forbade the sale of Mulamasa, and Mulamasa is that a cloth is only touched and not examined (by looking at it). And he (peace and blessings be upon him and his family) also forbade the sale of Munabadhah, and Munabadhah is that a person, after making a deal, throws the cloth towards the other before he has turned it over or examined it.