Sahih al-Bukhari 1383
Book 23: Funerals (Al-Janaa'iz) · Narrated by Ibn `Abbas
Arabic
حَدَّثَنَا حِبَّانُ، أَخْبَرَنَا عَبْدُ اللَّهِ، أَخْبَرَنَا شُعْبَةُ، عَنْ أَبِي بِشْرٍ، عَنْ سَعِيدِ بْنِ جُبَيْرٍ، عَنِ ابْنِ عَبَّاسٍ ـ رضى الله عنهم ـ قَالَ سُئِلَ رَسُولُ اللَّهِ صلى الله عليه وسلم عَنْ أَوْلاَدِ الْمُشْرِكِينَ فَقَالَ " اللَّهُ إِذْ خَلَقَهُمْ أَعْلَمُ بِمَا كَانُوا عَامِلِينَ ".
English translation
Narrated Ibn `Abbas:Allah's Messenger (ﷺ) was asked about the children of (Mushrikeen) pagans. The Prophet (ﷺ) replied, "Since Allah created them, He knows what sort of deeds they would have done
Reference: Sahih al-Bukhari 1383, Book of Funerals (Al-Janaa'iz). English translation by Dr. Muhammad Muhsin Khan.