The Messenger of Allah ﷺ forbade transactions of mulamasah and munabadhah. Mulamasah means that the buyer touches a garment without looking at it, and munabadhah means that the seller throws the garment to the buyer to complete the sale before the buyer can examine it or look at it.
حدثنا عبد الرزاق أخبرنا معمر حدثني ابن شهاب عن عمرو بن سعد بن أبي وقاص أنه
نهى رسول الله ﷺ عن الملامسة والملامسة يمس الثوب لا ينظر إليه وعن المنابذة وهو طرح الثوب الرجل بالبيع قبل أن يقلبه وينظر إليه
Its isnad is sahih. Amr bin Saad bin Abu Waqqas is truthful, but they criticized him for having been a commander of the army that killed Husayn bin Ali. In any case, he was not the sole narrator, for the hadith has already appeared at 10964 through very many routes.