Sahih Muslim 2766 a

The Prophet (ﷺ) said, "Amongst the men of Bani Israel there was a man who had murdered ninety-nine persons. Then he set out asking (whether his repentance could be accepted or not). He came upon a monk and asked him if his repentance could be accepted. The monk replied in the negative and so the man killed him. He kept on asking till a man advised to go to such and such village. (So he left for it) but death overtook him on the way. While dying, he turned his chest towards that village (where he had hoped his repentance would be accepted), and so the angels of mercy and the angels of punishment quarrelled amongst themselves regarding him. Allah ordered the village (towards which he was going) to come closer to him, and ordered the village (whence he had come), to go far away, and then He ordered the angels to measure the distances between his body and the two villages. So he was found to be one span closer to the village (he was going to). So he was forgiven."

Prophet (ﷺ) of Allah (ﷺ) said: "There was a man from among a nation before you who killed ninety-nine people and then made an inquiry about the most learned person on the earth. He was directed to a monk. He came to him and told him that he had killed ninety-nine people and asked him if there was any chance for his repentance to be accepted. He replied in the negative and the man killed him also completing one hundred. He then asked about the most learned man in the earth. He was directed to a scholar. He told him that he had killed one hundred people and asked him if there was any chance for his repentance to be accepted. He replied in the affirmative and asked, 'Who stands between you and repentance? Go to such and such land; there (you will find) people devoted to prayer and worship of Allah, join them in worship, and do not come back to your land because it is an evil place.' So he went away and hardly had he covered half the distance when death overtook him; and there was a dispute between the angels of mercy and the angels of torment. The angels of mercy pleaded, 'This man has come with a repenting heart to Allah,' and the angels of punishment argued, 'He never did a virtuous deed in his life.' Then there appeared another angel in the form of a human being and the contending angels agreed to make him arbiter between them. He said, 'Measure the distance between the two lands. He will be considered belonging to the land to which he is nearer.' They measured and found him closer to the land (land of piety) where he intended to go, and so the angels of mercy collected his soul". <b>[Al-Bukhari and Muslim]</b>.

Among the B. Isra’il there was a man who killed ninety-nine people and then went out to make enquiry. He went to a monk and asked him whether repentance would be accepted for what he had done, and when he replied that it would not, he killed him. He then began to make enquiry, and a man told him to go to such and such a village. When he was upon the point of death he arose to go towards it, and the angels of mercy and the angels of punishment disputed over him. God then told the one village to come near and the other to remove to a distance, and told the angels to measure the distance between them. He was found to be the distance of a span nearer to the one towards which he was going, and so he was forgiven. (Bukhari and Muslim.)