The Book of Fighting [The Prohibition of Bloodshed]
37/2. Chapter:
The Gravity of the Sin of Shedding Blood
Sunan an-Nasai
قَالَ وَأَخْبَرَنِي أَزْهَرُ بْنُ جَمِيلٍ الْبَصْرِيُّ، قَالَ حَدَّثَنَا خَالِدُ بْنُ الْحَارِثِ، قَالَ حَدَّثَنَا شُعْبَةُ، عَنِ الْمُغِيرَةِ بْنِ النُّعْمَانِ، عَنْ سَعِيدِ بْنِ جُبَيْرٍ، قَالَ اخْتَلَفَ أَهْلُ الْكُوفَةِ فِي هَذِهِ الآيَةِ { وَمَنْ يَقْتُلْ مُؤْمِنًا مُتَعَمِّدًا } فَرَحَلْتُ إِلَى ابْنِ عَبَّاسٍ فَسَأَلْتُهُ فَقَالَ لَقَدْ أُنْزِلَتْ فِي آخِرِ مَا أُنْزِلَ ثُمَّ مَا نَسَخَهَا شَىْءٌ .
It was narrated that Sa'eed bin Jubair said: "The people of Al-Kufah differed concerning this Verse: "And whoever kills a believer intentionally." So I went to Ibn 'Abbas and asked him, and he said: 'It was revealed among the last of what was revealed, and nothing of it was abrogated after that.'"
Reference : Sunan an-Nasa'i 4000In-book reference : Book 37, Hadith 35English translation : Vol. 5, Book 37, Hadith 4005