It was narrated from 'Amr bin Shu'aib, from his father, that his grandfather said:
"The Messenger of Allah (ﷺ) said: 'It is not permissible to sell something that is not with you, nor to profit from what you do not possess."'
English reference: Vol. 3, Book 12, Hadith 2188
Arabic reference: Book 12, Hadith 2272