Messenger of Allah 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." (Using translation from Bukhārī 1383)
عَنِ النَّبِيِّ ﷺ أَنَّهُ سُئِلَ عَنْ أَوْلَادِ الْمُشْرِكِينَ؟ فَقَالَ اللهُ إِذْ خَلَقَهُمْ أَعْلَمُ بِمَا كَانُوا عَامِلِينَ