Sahih Bukhari Volume 8, Book 80, Hadith Number 736.

Narrated By Al-Bara : The last Quranic Verse that was revealed (to the Prophet) was the final Verse of Surat-an-Nisa, i.e. “They ask you for a legal verdict Say: Allah directs (thus) About those who leave No descendants or ascendants as heirs…” (4.176)