"The Messenger of Allah said: 'No man is bound by a transaction involving the sale of something that he does not possess.'''
Sunan an-Nasa'i Book 44, Hadith 164
← Previous Hadith that the Messenger of Allah said: "It is not permissible to lend on the condition of a sale, or to have two conditions in one transaction, or to sell what you do not have." (Sahih

Sunan an-Nasa'i Book 44, Hadith 163 Next Hadith → "I asked the Prophet "O Messenger of Allah, a man may come to me and ask me to sell him something that I do not have. Can I sell it to him then go and buy it from the market?' He said: 'Do not sell what you do not have.'''

Sunan an-Nasa'i Book 44, Hadith 165