This hadith has been reported on the authority of Abu 'Umais through the same chain of transmitters but with a slight variation of wording.
Sahih Muslim Book 56, Hadith 25
← Previous Hadith Ibn Abbas said to me: Do you know-and in the words of Harun (another narrator): Are you aware of-the last Sura which was revealed in the Qur'an as a whole? I said: Yes," When came the help from Allah and the victory" (cx.). Thereupon, he said: You have told the truth. And in the narration of Abu Shaiba (the words are): Do you know the Sura? And he did not mention the words" the last one".

Sahih Muslim Book 56, Hadith 24 Next Hadith → As-Salam-o-'Alaikum. They caught hold of him and killed him and took possession of his flock. Then this verse was revealed:" He who meets you and extends you salutations, don't say: You are not a Muslim" (iv. 94). Ibn 'Abbas, however, recited the word as-Salam instead of" as-Salam".

Sahih Muslim Book 56, Hadith 26