عَنِ ابْنِ عَبَّاسٍ قَالَ: كَانَ الطَّلَاقُ عَلَى عَهْدِ رَسُولِ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَآلِهِ وَسَلَّمَ وَأَبِي بَكْرٍ وَسَنَتَيْنِ مِنْ خِلَافَةِ عُمَرَ بْنِ الْخَطَّابِ طَلَاقُ الثَّلَاثِ وَاحِدَةٌ، فَقَالَ عُمَرُ: إِنَّ النَّاسَ قَدِ اسْتَعْجَلُوا فِي أَمْرٍ كَانَ لَهُمْ فِيهِ أَنَاةٌ فَلَوْ أَمْضَيْنَاهُ عَلَيْهِمْ، فَأَمْضَاهُ عَلَيْهِمْ
It is narrated from Sayyiduna Ibn Abbas (may Allah be pleased with them both) that during the time of the Prophet (peace and blessings be upon him), in the caliphate of Sayyiduna Abu Bakr (may Allah be pleased with him), and during the first two years of the caliphate of Sayyiduna Umar ibn Khattab (may Allah be pleased with him), three divorces were counted as only one divorce. Sayyiduna Umar (may Allah be pleased with him) said: People are hastening in a matter in which they should proceed with utmost deliberation, so if we enforce the decision of all three divorces taking effect, then he enforced this decision.