Sahih al-Bukhari 4766
Sahih al-Bukhari · Book 65: Prophetic Commentary on the Qur'an (Tafseer of the Prophet (pbuh)) · "Except those who repent and believe (in the Islamic Monotheism) and do righteous deeds, for those, Allah will change their sins into good deeds, and Allah is Oft-Forgiving, Most Merciful." (V.25:70)
Narrated Sa`id bin Jubair:
حَدَّثَنَا عَبْدَانُ ، أَخْبَرَنَا أَبِي ، عَنْ شُعْبَةَ ، عَنْ مَنْصُورٍ ، عَنْ سَعِيدِ بْنِ جُبَيْرٍ ، قَالَ أَمَرَنِي عَبْدُ الرَّحْمَنِ بْنُ أَبْزَى أَنْ أَسْأَلَ ابْنَ عَبَّاسٍ ، عَنْ هَاتَيْنِ الآيَتَيْنِ، {وَمَنْ يَقْتُلْ مُؤْمِنًا مُتَعَمِّدًا} ، فَسَأَلْتُهُ فَقَالَ لَمْ يَنْسَخْهَا شَىْءٌ. وَعَنْ {وَالَّذِينَ لاَ يَدْعُونَ مَعَ اللَّهِ إِلَهًا آخَرَ} قَالَ نَزَلَتْ فِي أَهْلِ الشِّرْكِ.
`Abdur-Rahman bin Abza ordered me to ask Ibn `Abbas regarding the two Verses (the first of which was ): "And whosoever murders a believer intentionally." (4.93) So I asked him, and he said, "Nothing has abrogated this Verse." About (the other Verse): 'And those who invoke not with Allah any other god.' he said, "It was revealed concerning the pagans."