Sunan an-Nasa'i 4512
سنن النسائي#4512SahihIt was narrated that Abu Sa'eed Al-Khudri said:"The messenger of Allah forbade two kinds of transactions: Mulamash and Mumabadha
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Abu GhuddahSahih
Al-AlbaniSahih
Zubair Ali ZaiSahih Bukhari
In-book reference: 44:64