Sahih Bukhari | Volume 5 | Hadith Number 650

Narrated by Al-Bara
The last Sura which was revealed in full was Baraa (i.e. Sura-at-Tauba), and the last Sura (i.e. part of a Sura) which was revealed was the last Verses of Sura-an-Nisa': "They ask you for a legal decision. Say: Allah directs (thus) About those who have No descendants

or ascendants As heirs." (4:177)