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.  

كَانَ الطَّلاَقُ عَلَى عَهْدِ رَسُولِ اللَّهِ ﷺ 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  

Do you know that three (divorces) were treated as one during the lifetime of Allah's Apostle ﷺ, and that of Abu Bakr, and during three (years) of the caliphate of Umar (Allah be pleased with him)? Ibn Abbas (Allah be pleased with them) said: Yes.  

لاِبْنِ عَبَّاسٍ أَتَعْلَمُ أَنَّمَا كَانَتِ الثَّلاَثُ تُجْعَلُ وَاحِدَةً عَلَى عَهْدِ النَّبِيِّ ﷺ وَأَبِي بَكْرٍ وَثَلاَثًا مِنْ إِمَارَةِ عُمَرَ فَقَالَ ابْنُ عَبَّاسٍ نَعَمْ  

Enlighten us with your information whether the three divorces (pronounced at one and the same time) were not treated as one during the lifetime of Messenger of Allah ﷺ and Abu Bakr. He said: It was in fact so, but when during the caliphate of 'Umar (Allah be pleased with him) people began to pronounce divorce frequently, he allowed them to do so (to treat pronouncements of three divorces in a single breath as one).  

لاِبْنِ عَبَّاسٍ هَاتِ مِنْ هَنَاتِكَ أَلَمْ يَكُنِ الطَّلاَقُ الثَّلاَثُ عَلَى عَهْدِ رَسُولِ اللَّهِ ﷺ وَأَبِي بَكْرٍ وَاحِدَةً فَقَالَ قَدْ كَانَ ذَلِكَ فَلَمَّا كَانَ فِي عَهْدِ عُمَرَ تَتَايَعَ النَّاسُ فِي الطَّلاَقِ فَأَجَازَهُ عَلَيْهِمْ