Sunan an-Nasa'i 4631
سنن النسائي#4631SahihIt was narrated from 'Amr bin Shu'aib, from his father, that his grandfather said:"The Messenger of Allah forbade lending on the condition of a sale, selling what you do not have, and profiting on what you do not possess
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Abu GhuddahHasan Sahih
Al-AlbaniHasan Sahih
Zubair Ali ZaiHasan
In-book reference: 44:183