"This Verse - 'And whoever kills a believer intentionally, his recompense is Hell' - was revealed six months after the Verse which was revealed in Surat Al-Furqan."  

نَزَلَتْ هَذِهِ الآيَةُ { وَمَنْ يَقْتُلْ مُؤْمِنًا مُتَعَمِّدًا فَجَزَاؤُهُ جَهَنَّمُ خَالِدًا فِيهَا } الآيَةُ كُلُّهَا بَعْدَ الآيَةِ الَّتِي نَزَلَتْ فِي الْفُرْقَانِ بِسِتَّةِ أَشْهُرٍ قَالَ أَبُو عَبْدِ الرَّحْمَنِ مُحَمَّدُ بْنُ عَمْرٍو لَمْ يَسْمَعْهُ مِنْ أَبِي الزِّنَادِ  

"And whoever kills a believer intentionally, his recompense is Hell" that he said: "This Verse was revealed eight months after the Verse that is in Tabark Al-Furqan: "And those who invoke not any other ilah (god) along with Allah, or kill such person as Allah has forbidden, except by right."  

عَنْ زَيْدٍ فِي قَوْلِهِ { وَمَنْ يَقْتُلْ مُؤْمِنًا مُتَعَمِّدًا فَجَزَاؤُهُ جَهَنَّمُ } قَالَ نَزَلَتْ هَذِهِ الآيَةُ بَعْدَ الَّتِي فِي { تَبَارَكَ } الْفُرْقَانِ بِثَمَانِيَةِ أَشْهُرٍ { وَالَّذِينَ لاَ يَدْعُونَ مَعَ اللَّهِ إِلَهًا آخَرَ وَلاَ يَقْتُلُونَ النَّفْسَ الَّتِي حَرَّمَ اللَّهُ إِلاَّ بِالْحَقِّ } قَالَ أَبُو عَبْدِ الرَّحْمَنِ أَدْخَلَ أَبُو الزِّنَادِ بَيْنَهُ وَبَيْنَ خَارِجَةَ مُجَالِدَ بْنَ عَوْفٍ  

The verse "If a man kills a believer intentionally, his recompense is Hell to abide therein for ever" was revealed six months after the verse "And those who invoke not with Allah any other god, nor slay such life as Allah has made sacred, except for just cause in Surat al-Furqan.  

سَمِعْتُ زَيْدَ بْنَ ثَابِتٍ فِي هَذَا الْمَكَانِ يَقُولُ أُنْزِلَتْ هَذِهِ الآيَةُ { وَمَنْ يَقْتُلْ مُؤْمِنًا مُتَعَمِّدًا فَجَزَاؤُهُ جَهَنَّمُ خَالِدًا فِيهَا } بَعْدَ الَّتِي فِي الْفُرْقَانِ { وَالَّذِينَ لاَ يَدْعُونَ مَعَ اللَّهِ إِلَهًا آخَرَ وَلاَ يَقْتُلُونَ النَّفْسَ الَّتِي حَرَّمَ اللَّهُ إِلاَّ بِالْحَقِّ } بِسِتَّةِ أَشْهُرٍ