Sahih al-Bukhari, Volume 7, Book 63, Hadith 189 (USC-MSA) ⓘ

Narrated Masruq: I asked `Aisha about the option: She said, "The Prophet gave us the option. Do you think that option was considered as a divorce?" I said, "It matters little to me if I give my wife the option once or a hundred times after she has chosen me."

حَدَّثَنَا مُسَدَّدٌ، حَدَّثَنَا يَحْيَى، عَنْ إِسْمَاعِيلَ، حَدَّثَنَا عَامِرٌ، عَنْ مَسْرُوقٍ، قَالَ سَأَلْتُ عَائِشَةَ عَنِ الْخِيَرَةِ،، فَقَالَتْ خَيَّرَنَا النَّبِيُّ صلى الله عليه وسلم أَفَكَانَ طَلاَقًا قَالَ مَسْرُوقٌ لاَ أُبَالِي أَخَيَّرْتُهَا وَاحِدَةً أَوْ مِائَةً بَعْدَ أَنْ تَخْتَارَنِي‏.‏

Nafi' said: When Ibn 'Umar was asked about person who had given three divorces, he said, "Would that you gave one or two divorces, for the Prophet ordered me to do so. If you give three divorces then she cannot be lawful for you until she has married another husband (and is divorced by him)."

وَقَالَ اللَّيْثُ عَنْ نَافِعٍ، كَانَ ابْنُ عُمَرَ إِذَا سُئِلَ عَمَّنْ طَلَّقَ ثَلاَثًا قَالَ لَوْ طَلَّقْتَ مَرَّةً أَوْ مَرَّتَيْنِ فَإِنَّ النَّبِيَّ صلى الله عليه وسلم أَمَرَنِي بِهَذَا، فَإِنْ طَلَّقْتَهَا ثَلاَثًا حَرُمَتْ حَتَّى تَنْكِحَ زَوْجًا غَيْرَكَ‏.‏