Sahih al-Bukhari Book 34, Hadith 60

The Prophet (ﷺ) said, "The buyer and the seller have the option to cancel or confirm the bargain before they separate from each other or if the sale is optional." Nafi` said, "Ibn `Umar used to separate quickly from the seller if he had bought a thing which he liked."

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The Prophet (ﷺ) said, "O Bani Najjar! Suggest a price for your garden." Part of it was a ruin and it contained some date palms.

Sahih al-Bukhari Book 34, Hadith 59
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The Prophet (ﷺ) said, "The buyer and the seller have the option of canceling or confirming the deal unless they separate."

Sahih al-Bukhari Book 34, Hadith 61