The last complete surah revealed to the Prophet ﷺ was Bara'ah, and the last verse revealed was the closing verse of Surah an-Nisa, "They ask you for a ruling" [Nisa 4:176] to the end of the surah.
حدثنا حجين حدثنا إسرائيل عن أبي إسحاق
آخر سورة نزلت على النبي ﷺ كاملة براءة وآخر آية نزلت خاتمة سورة النساء {يستفتونك} إلى آخر السورة
Its isnad is sahih, like the one before it. Bukhari related the hadith 8/316, no. 4654, in the tafsir of Surat Baraah, Fath al-Bari, and Muslim 3/1236, no. 1618, in the Book of Inheritance, on the last verse revealed being that of kalalah, and Abu Dawud 2/120, no. 2888, in the Book of Inheritance.