كتاب الفرائض
23  
The Book of the Rules of Inheritance
(3)
Chapter: The Last Verse To Be Revealed Was The Verse Of Kalalah
(3)
باب آخِرِ آيَةٍ أُنْزِلَتْ آيَةُ الْكَلاَلَةِ ‏‏
Sahih Muslim 1618 c

Abu Ishaq said that he heard al-Bara' b. 'Azib (Allah be pleased with him) say:

The last complete sura revealed (in the Holy Qur'an) is Sura Tauba (i e. al-Bara'at, ix.), and the last verse revealed is that pertaining to Kalala.
حَدَّثَنَا إِسْحَاقُ بْنُ إِبْرَاهِيمَ الْحَنْظَلِيُّ، أَخْبَرَنَا عِيسَى، - وَهُوَ ابْنُ يُونُسَ - حَدَّثَنَا زَكَرِيَّاءُ، عَنْ أَبِي إِسْحَاقَ، عَنِ الْبَرَاءِ، أَنَّ آخِرَ، سُورَةٍ أُنْزِلَتْ تَامَّةً سُورَةُ التَّوْبَةِ وَأَنَّ آخِرَ آيَةٍ أُنْزِلَتْ آيَةُ الْكَلاَلَةِ ‏.‏
Reference : Sahih Muslim 1618c
In-book reference : Book 23, Hadith 15
USC-MSA web (English) reference : Book 11, Hadith 3941
  (deprecated numbering scheme)