5:34
إِلَّا ٱلَّذِينَ تَابُوا۟ مِن قَبْلِ أَن تَقْدِرُوا۟ عَلَيْهِمْ ۖ فَٱعْلَمُوٓا۟ أَنَّ ٱللَّهَ غَفُورٌۭ رَّحِيمٌۭ
Except for those who return [repenting] before you apprehend them. And know that Allah is Forgiving and Merciful.
Translation · Saheeh International
Tafsir
Ibn Kathīr (abridged)
Human Beings Should Respect the Sanctity of Other Human Beings
Allah says, because the son of Adam killed his brother in transgression and aggression,
كَتَبْنَا عَلَى بَنِى إِسْرَءِيلَ
(We ordained for the Children of Israel...) meaning, We legislated for them and informed them,
أَنَّهُ مَن قَتَلَ نَفْساً بِغَيْرِ نَفْسٍ أَوْ فَسَادٍ فِى الاٌّرْضِ فَكَأَنَّمَا قَتَلَ النَّاسَ جَمِيعاً وَمَنْ أَحْيَـهَا فَكَأَنَّمَا أَحْيَا النَّاسَ جَمِيعاً
(that if anyone killed a person not in retaliation of murder, or (and) to spread mischief in the land - it would be as if he killed all mankind, and if anyone saved a life, it would be as if he saved the life of all mankind.) The Ayah states, whoever kills a soul without justification -- such as in retaliation for murder or for causing mischief on earth -- will be as if he has killed all mankind, because there is no difference between one life and another.