´It was narrated from Samurah that the Messenger of Allah (ﷺ) said:` "The two parties to a transaction have the choice (of annulling it) so long as they have not yet parted. "
Related hadith on this topic
Explanation & Benefits
Hafiz Muhammad Ameen
English translation:
"Or each of them"—this means that each one says to the other: 'Now make your choice, you have the option.' Afterwards, there will be no possibility of returning (to the sale). Both should clarify this matter three times; then, even though the session (majlis) is still ongoing, the option to revoke (the sale) will no longer remain. This same concept has been referred to as 'Bay‘ al-Khiyar' (sale with option) in previous narrations. The second meaning of Bay‘ al-Khiyar has already been explained in Hadith number: 4470.
Source: Sunan Nasa'i: Translation and Benefits by Shaykh Hafiz Muhammad Amin Hafizullah, Page: 4486
Hafiz Muhammad Ameen
Urdu marginal note:
"Final consent" means to forgo the right of return, as has been discussed in the context of the meaning of bay‘ khiyar (sale with option).
Source: Sunan Nasa'i: Translation and Benefits by Shaykh Hafiz Muhammad Amin Hafizullah, Page: 4487