Abu al-Sahba' said to Ibn Abbas: Do you know that a divorce by three pronouncements was made a single one during the time of the Prophet ﷺ, and of AbuBakr and in the early days of the caliphate of Umar? He replied: Yes.
لاِبْنِ عَبَّاسٍ أَتَعْلَمُ إِنَّمَا كَانَتِ الثَّلاَثُ تُجْعَلُ وَاحِدَةً عَلَى عَهْدِ النَّبِيِّ ﷺ وَأَبِي بَكْرٍ وَثَلاَثًا مِنْ إِمَارَةِ عُمَرَ قَالَ ابْنُ عَبَّاسٍ نَعَمْ