Sunan an-Nasa'i 3406
سنن النسائي#3406Sahihأَخْبَرَنَا أَبُو دَاوُدَ، سُلَيْمَانُ بْنُ سَيْفٍ قَالَ حَدَّثَنَا أَبُو عَاصِمٍ، عَنِ ابْنِ جُرَيْجٍ، عَنِ ابْنِ طَاوُسٍ، عَنْ أَبِيهِ، أَنَّ أَبَا الصَّهْبَاءِ، جَاءَ إِلَى ابْنِ عَبَّاسٍ فَقَالَ يَا ابْنَ عَبَّاسٍ أَلَمْ تَعْلَمْ أَنَّ الثَّلاَثَ، كَانَتْ عَلَى عَهْدِ رَسُولِ اللَّهِ صلى الله عليه وسلم وَأَبِي بَكْرٍ وَصَدْرًا مِنْ خِلاَفَةِ عُمَرَ رَضِيَ اللَّهُ عَنْهُمَا تُرَدُّ إِلَى الْوَاحِدَةِ قَالَ نَعَمْ .
It was narrated from Ibn Tawus, from his father, that Abu As-Sahba' came to Ibn 'Abbas and said:"O Ibn 'Abbas! Did you not know that the threefold divorce during the time of the Messenger of Allah and Abu Bakr, and during the early part of 'Umar's Caliphate, used to be counted as one divorce?" He said: "Yes
Scholarly Authentication
The label above is the grade most of these scholars gave — one dissenting opinion no longer speaks for all of them. If any scholar calls a narration fabricated, that verdict is shown instead, whatever the others say. Each scholar's own wording:
In-book reference: 27:18