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

Aba Ishaq reported this hadith on the authority of al-Bara' (Allah be pleased with him) with a slight variation of words, viz. the last sura that was revealed complete.

حَدَّثَنَا أَبُو كُرَيْبٍ، حَدَّثَنَا يَحْيَى، - يَعْنِي ابْنَ آدَمَ - حَدَّثَنَا عَمَّارٌ، - وَهُوَ ابْنُ رُزَيْقٍ - عَنْ أَبِي إِسْحَاقَ، عَنِ الْبَرَاءِ، بِمِثْلِهِ غَيْرَ أَنَّهُ قَالَ آخِرُ سُورَةٍ أُنْزِلَتْ كَامِلَةً ‏.‏
Reference : Sahih Muslim 1618d
In-book reference : Book 23, Hadith 16
USC-MSA web (English) reference : Book 11, Hadith 3942
  (deprecated numbering scheme)