Abu Saeed Khudri reported,

The Prophet of Allah ﷺ said, "Among the people before you, there was a man who had killed ninety-nine souls. He asked about the most knowledgeable person on earth and was directed to a monk. He came to him and said that he had killed ninety-nine people, and asked whether there was any repentance available for him.The monk said, 'No.'So he killed him, completing one hundred. Then he asked again about the most knowledgeable person on earth and was directed to a learned man. He told him that he had killed one hundred people and asked whether there was any repentance available for him.The learned man replied, 'Yes. Who could stand between you and repentance? Travel to such-and-such a land, for there are people there who worship Allah. Worship Allah with them, and do not return to your own land, for it is an evil land.'So he set out, and when he had reached the midpoint of the journey, death came to him. The angels of mercy and the angels of punishment disputed over him.The angels of mercy said, 'He came as a repentant man, turning his heart toward Allah.'The angels of punishment said, 'He never did any good at all.'Then an angel came to them in the form of a human being, and they made him the judge between them. He said, 'Measure the distance between the two lands. Whichever he is closer to, he belongs to its people.'They measured, and found him to be closer to the land he had been heading toward. So the angels of mercy took his soul."

عن أبي سعيد الخدري

أن نبي الله ﷺ قال: كان فيمن كان قبلكم رجل قتل تسعة وتسعين نفسا، فسأل عن أعلم أهل الأرض، فدل على راهب، فأتاه، فقال: إنه قتل تسعة وتسعين نفسا، فهل له من توبة؟ فقال: لا. فقتله، فكمل به مائة، ثم سأل عن أعلم أهل الأرض، فدل على رجل عالم، فقال: إنه قتل مائة نفس، فهل له من توبة؟ فقال: نعم. ومن يحول بينه وبين التوبة؟ انطلق إلى أرض كذا وكذا، فإن بها أناسا يعبدون الله، فاعبد الله معهم، ولا ترجع إلى أرضك، فإنها أرض سوء، فانطلق حتى إذا نصف الطريق أتاه الموت، فاختصمت فيه ملائكة الرحمة وملائكة العذاب، فقالت ملائكة الرحمة: جاء تائبا مقبلا بقلبه إلى الله، وقالت ملائكة العذاب: إنه لم يعمل خيرا قط، فأتاه ملك في صورة آدمي، فجعلوه بينهم، فقال: قيسوا ما بين الأرضين، فإلى أيتهما كان أدنى فهو له، فقاسوه، فوجدوه أدنى إلى الأرض التي أراد، فقبضته ملائكة الرحمة.