393
Musnad AhmedIt was narrated that Ibn "Umar (رضي الله عنه) said: The Messenger of Allah (ﷺ) said:
“The two parties to a transaction have the option (of cancelling it) so long as they have not parted or there is a condition which gives the option to cancel."
Reference: Musnad Ahmad 393
Arabic/English book : Book 3, Hadith 393
Arabic/English book : Book 3, Hadith 393