Ibn 'Abbas (Allah be pleased with them) reported that the (pronouncement) of three divorces during the lifetime of Allah's Messenger (ﷺ) and that of Abu Bakr and two years of the caliphate of Umar (Allah be pleased with him) (was treated) as one. But Umar b. Khattab (Allah be pleased with him) said:

Verily the people have begun to hasten in the matter in which they are required to observe respite. So if we had imposed this upon them, and he imposed it upon them.
حَدَّثَنَا إِسْحَاقُ بْنُ إِبْرَاهِيمَ، وَمُحَمَّدُ بْنُ رَافِعٍ، - وَاللَّفْظُ لاِبْنِ رَافِعٍ - قَالَ إِسْحَاقُ أَخْبَرَنَا وَقَالَ ابْنُ رَافِعٍ، حَدَّثَنَا عَبْدُ الرَّزَّاقِ، أَخْبَرَنَا مَعْمَرٌ، عَنِ ابْنِ طَاوُسٍ، عَنْ أَبِيهِ، عَنِ ابْنِ عَبَّاسٍ، قَالَ كَانَ الطَّلاَقُ عَلَى عَهْدِ رَسُولِ اللَّهِ صلى الله عليه وسلم وَأَبِي بَكْرٍ وَسَنَتَيْنِ مِنْ خِلاَفَةِ عُمَرَ طَلاَقُ الثَّلاَثِ وَاحِدَةً فَقَالَ عُمَرُ بْنُ الْخَطَّابِ إِنَّ النَّاسَ قَدِ اسْتَعْجَلُوا فِي أَمْرٍ قَدْ كَانَتْ لَهُمْ فِيهِ أَنَاةٌ فَلَوْ أَمْضَيْنَاهُ عَلَيْهِمْ ‏.‏ فَأَمْضَاهُ عَلَيْهِمْ ‏.‏
Reference : Sahih Muslim 1472 a
In-book reference : Book 18, Hadith 22
USC-MSA web (English) reference : Book 9, Hadith 3491
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