The Prophet (ﷺ) said: If anyone rescinds a sale with a Muslim, Allah will cancel his slip, on the Day of Resurrection.
Sunan Abi Dawud Book 24, Hadith 45
← Previous Hadith The Messenger of Allah (ﷺ) as saying: Both parties in a business transaction have a right of option (to annul it) so long as they are not separated ; and if they tell the truth and make everything clear, they will be blessed in their transaction, but it they conceal anything and lie, the blessing on their transaction will be blotted out.

Abu Dawud said: A similar tradition has also been transmitted by Sa'id b. Abi 'Arubah and Hammad. As regards with Hammam, he said in his version: Until they separate or exercise the right of option (to annul the transaction), saying the words of option three times.

Sunan Abi Dawud Book 24, Hadith 44 Next Hadith → The Prophet (ﷺ) said: If anyone makes two transactions combined in one bargain, he should have the lesser of the two or it will involve usury.

Sunan Abi Dawud Book 24, Hadith 46