The Prophet ﷺ forbade the sale of habal al-habalah.
حدثنا عبد الرحمن عن مالك عن نافع
أن النبي ﷺ نهى عن بيع حبل الحبلة
Its chain of transmission is sahih. It is found in Muwatta 2:149, at greater length. It has already occurred at the end of Umar's musnad, number 394, also by way of Malik, and it has already occurred in Ibn Umar's musnad as well, both at length and in brief, numbers 4491, 4582, 4640.