"The Messenger of Allah said: "The two parties to a transaction both have the choice who long as they have not separated or one of them says to the other: 'Decide!"' (Sahih )
Sunan an-Nasa'i Book 44, Hadith 21
← Previous Hadith "Nafi dictated to me, from Ibn 'Umar who said: The Messenger of Allah said: 'the two parties to a transaction both have the choice so long as they have not separated, unless they have both chosen to conclude the transaction. If they have both chosen to conclude the transaction, then the transactions binding." (Sahih )

Sunan an-Nasa'i Book 44, Hadith 20 Next Hadith → "The Messenger of Allah said: 'The two parties to a transaction both have the choice so long as they have not separated or chosen to conclude the transaction." Or perhaps Nafi said: "Or one of them has said to the other: 'Decide! "(Sahih )

Sunan an-Nasa'i Book 44, Hadith 22