Narrated Sa`id bin Jubair:
The people of Kufa disagreed (disputed) about the above Verse. So I went to Ibn `Abbas and asked him about it. He said, "This Verse:-- "And whoever kills a believer intentionally, his recompense is Hell." was revealed last of all (concerning premeditated murder) and nothing abrogated it."
USC-MSA web (English) reference: Vol. 6, Book 60, Hadith 114
Arabic reference: Book 65, Hadith 4590