حَدَّثَنَا إِسْحَاقُ بْنُ إِبْرَاهِيمَ، أَخْبَرَنَا رَوْحُ بْنُ عُبَادَةَ، أَخْبَرَنَا ابْنُ جُرَيْجٍ، ح وَحَدَّثَنَا ابْنُ رَافِعٍ، - وَاللَّفْظُ لَهُ - حَدَّثَنَا عَبْدُ الرَّزَّاقِ، أَخْبَرَنَا ابْنُ جُرَيْجٍ، أَخْبَرَنِي ابْنُ طَاوُسٍ، عَنْ أَبِيهِ، أَنَّ أَبَا الصَّهْبَاءِ، قَالَ لاِبْنِ عَبَّاسٍ أَتَعْلَمُ أَنَّمَا كَانَتِ الثَّلاَثُ تُجْعَلُ وَاحِدَةً عَلَى عَهْدِ النَّبِيِّ صلى الله عليه وسلم وَأَبِي بَكْرٍ وَثَلاَثًا مِنْ إِمَارَةِ عُمَرَ ‏.‏ فَقَالَ ابْنُ عَبَّاسٍ نَعَمْ ‏.‏

Abu Sahba' said toIbn 'Abbas (Allah be pleased with them): Do you know that three (divorces) were treated as one during the lifetime of Allah's Apostle (PBUH), 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. Translation Not Available

Book Ref: Sahih Muslim Book 18 Hadith 3492
Web Ref:  Sahih Muslim Book 9 Hadith 1472 b