حَدَّثَنَا الْقَعْنَبِيُّ، حَدَّثَنَا الْمُعْتَمِرُ، عَنْ أَبِيهِ، عَنْ رَقَبَةَ بْنِ مَصْقَلَةَ، عَنْ أَبِي إِسْحَاقَ، عَنْ سَعِيدِ بْنِ جُبَيْرٍ، عَنِ ابْنِ عَبَّاسٍ، عَنْ أُبَىِّ بْنِ كَعْبٍ، قَالَ قَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم ‏"‏ الْغُلاَمُ الَّذِي قَتَلَهُ الْخَضِرُ طُبِعَ كَافِرًا وَلَوْ عَاشَ لأَرْهَقَ أَبَوَيْهِ طُغْيَانًا وَكُفْرًا ‏"‏ ‏.‏

Ubayy b. Ka’b said : The boy whom al-Khidr had killed was created an infidel. Had he lived, he would have moved his parents to rebellion and unbelief. Translation Not Available

Book Ref: Sunan Abi Dawud Book 42 Hadith 4705
Web Ref:  Sunan Abi Dawud Book 41 Hadith 4688