Sahih Bukhari Volume 1, Book 12, Hadith Number 730

Narated By Ibn ‘Abbas : (My mother) Umu-l-Fadl heard me reciting “Wal Mursalati ‘Urfan” (77) and said, “O my son! By Allah, your recitation made me remember that it was the last Sura I heard from Allah’s Apostle. He recited it in the Maghrib prayer.”