"The Messenger of Allah forbade Mulamasah, which means touching a garment without looking at it; (and he forbade) Munabadhah which is where one man sells his garment to another man by throwing it to him, without him checking it or looking at it."
Sunan an-Nasa'i Book 44, Hadith 66
← Previous Hadith "The Messenger of Allah forbade Munabadhah and Mulamash. Mulamasah is when two men trade garments with each other under cover of night, each man touching the garment of the other with his hand> and Munabadhah is when one man throws a garment to another and the other throws a garment to him, and they trade them with each other in that manner."

Sunan an-Nasa'i Book 44, Hadith 65 Next Hadith → "The Messenger of Allah forbade two kinds of garments and two kinds of transactions. As for the two kinds of transactions, they are Mulamash and Munabadhaha. Munabadha is when a man says, 'I throw this garment, and the transaction becomes binding, and Mulamasah is when a man touches it with his had, without spreading it out and checking it, and once he touches it, the transaction becomes binding."

Sunan an-Nasa'i Book 44, Hadith 67