Sahih Bukhari | Volume 6 | Hadith Number 286

Narrated by Said bin Jubair
The people of Kufa differed as regards the killing of a believer so I entered upon Ibn 'Abbas (and asked him) about that. Ibn 'Abbas said, "The Verse (in Surat-An-Nisa', 4:93) was the last thing revealed in this respect and nothing cancelled its validity."