IBNHIBBAN 615:
from Abū Saʿīd al-Khudrī —
[Machine] About the Prophet ﷺ , he said, "There was a man among the children of Israel who killed ninety-nine people. Then he went out seeking repentance and came across a monk. He asked him if there was any chance for repentance for him. The monk replied, 'No,' so he killed him. He continued asking and was directed to a certain village. However, death overtook him before he could reach it. So, the angels of mercy and the angels of punishment disputed over him. Allah then inspired to them to measure the distance between him and the two villages. The village he intended to reach was found closer to him by a hand-span, so he was forgiven."
ابن حبّان ٦١٥:
عن ابو سعيد الخدري —
عَنِ النَّبِيِّ ﷺ قَالَ «كَانَ فِي بَنِي إِسْرَائِيلَ رَجُلٌ قَتَلَ تِسْعَةً وَتِسْعِينَ إِنْسَانًا ثُمَّ خَرَجَ يَسْأَلُ فَأَتَى رَاهِبًا فَسَأَلَهُ هَلْ لَهُ مِنْ تَوْبَةٍ؟ قَالَ لَا فَقَتَلَهُ وَجَعَلَ يَسْأَلُ فقَالَ لَهُ رَجُلٌ ائْتِ قَرْيَةَ كَذَا وَكَذَا فَأَدْرَكَهُ الْمَوْتُ فَمَاتَ فَاخْتَصَمَتْ فِيهِ مَلَائِكَةُ الرَّحْمَةِ وَمَلَائِكَةُ الْعَذَابِ فَأَوْحَى اللَّهُ إِلَى هَذِهِ تَقَرَّبِي وَإِلَى هَذِهِ تَبَاعَدِي فَوُجِدَ أَقْرَبَ إِلَى هَذِهِ بِشِبْرٍ فَغُفِرَ لَهُ»
hadithunlocked.com