أَخْبَرَنَا عَمْرُو بْنُ عَلِيٍّ، قَالَ حَدَّثَنَا يَحْيَى، قَالَ حَدَّثَنَا ابْنُ جُرَيْجٍ، قَالَ أَخْبَرَنِي الْقَاسِمُ بْنُ أَبِي بَزَّةَ، عَنْ سَعِيدِ بْنِ جُبَيْرٍ، قَالَ قُلْتُ لاِبْنِ عَبَّاسٍ هَلْ لِمَنْ قَتَلَ مُؤْمِنًا مُتَعَمِّدًا مِنْ تَوْبَةٍ قَالَ لاَ ‏.‏ وَقَرَأْتُ عَلَيْهِ الآيَةَ الَّتِي فِي الْفُرْقَانِ ‏{‏ وَالَّذِينَ لاَ يَدْعُونَ مَعَ اللَّهِ إِلَهًا آخَرَ وَلاَ يَقْتُلُونَ النَّفْسَ الَّتِي حَرَّمَ اللَّهُ إِلاَّ بِالْحَقِّ ‏}‏ قَالَ هَذِهِ آيَةٌ مَكِّيَّةٌ نَسَخَتْهَا آيَةٌ مَدَنِيَّةٌ ‏{‏ وَمَنْ يَقْتُلْ مُؤْمِنًا مُتَعَمِّدًا فَجَزَاؤُهُ جَهَنَّمُ ‏}‏ ‏.‏

It was narrated that Sa'eed bin Jubair said: "I said to Ibn Abbas . 'Can a person who killed a believer intentionally repent?' He said: 'No.' Irecited the Verse from Al-Furqan to him: And those who invoke not any other ilah (god) along with Allah, nor kill such person a Allah has forbidden, except but right. He said: 'This Verse was revealed in Makkah and was abrogated by a verse that was revealed in Al-Madinah: And whoever kills a believer intentionally, his recompense is Hell Translation Not Available

Book Ref: Sunan An Nisai Book 45 Hadith 4865
Web Ref:  Sunan An Nisai Vol 5 Book 45 Hadith 4869