Sunan Abi Dawud 3454
سنن أبي داود#3454SahihNarrated 'Abdullah bin 'Umar:The Messenger of Allah (ﷺ) as saying: Each one of the two parties in a business has an option (to annul it) against the other party so long as they have not separated, except in a conditional bargain
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Al-AlbaniSahih
Muhammad Muhyi Al-Din Abdul HamidSahih
Zubair Ali ZaiSahih Bukhari (2111) Sahih Muslim (1531)
In-book reference: 24:39