عَنْ عَمْرِو بْنِ شُعَيْبٍ عَنْ أَبِيهِ عَنْ جَدِّهِ رَضِيَ اللَّهُ عَنْهُ أَنَّ النَّبِيَّ صَلَّى اللَّهُ عَلَيْهِ وَآلِهِ وَسَلَّمَ قَالَ الْبَائِعُ وَالْمُبْتَاعُ بِالْخِيَارِ حَتَّى يَتَفَرَّقَا إِلَّا أَنْ يَكُونَ صَفْقَةَ خِيَارٍ وَلَا يَحِلُّ لَهُ أَنْ يُفَارِقَهُ خَشْيَةَ أَنْ يَسْتَقِيلَهُ
Sayyiduna Abdullah bin Amr bin al-As (may Allah be pleased with them both) narrates that the Noble Prophet (peace and blessings be upon him) said: The seller and the buyer both have the option to cancel the transaction before they separate, unless it is an option-based transaction, and it is not permissible for a person to separate out of fear that the transaction will be cancelled.