Sunan an-Nasa'i 4511
سنن النسائي#4511SahihIt was narrated that Abu Sa'eed al-Khudri said:"The Messenger of Allah forbade two kinds of transactions: Mulamash and Munabddhah
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 ZaiHasan
In-book reference: 44:63