Sunan an-Nasa'i 4465
سنن النسائي#4465SahihIt was narrated from Malik, from Nafi from'Abdullah bin 'Umar that the Messenger of Allah said:"The two parties to a transaction both have the choice so long as they both chosen to conclude the transaction." (Sahih)
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Abu GhuddahSahih
Al-AlbaniSahih
Zubair Ali ZaiSahih - Agreed Upon
In-book reference: 44:17