Sahih Bukhari
Prophetic Commentary on the Quran (Tafseer of the Prophet (PBUH))
Volume: 006 / Book Number: 060 / Hadith Number: 286
Narrated 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."