Surah Al-Ma'idah, ayah 32

5:32

مِنۡ أَجۡلِ ذَٰلِكَ كَتَبۡنَا عَلَىٰ بَنِيٓ إِسۡرَٰٓءِيلَ أَنَّهُۥ مَن قَتَلَ نَفۡسَۢا بِغَيۡرِ نَفۡسٍ أَوۡ فَسَادٖ فِي ٱلۡأَرۡضِ فَكَأَنَّمَا قَتَلَ ٱلنَّاسَ جَمِيعٗا وَمَنۡ أَحۡيَاهَا فَكَأَنَّمَآ أَحۡيَا ٱلنَّاسَ جَمِيعٗاۚ وَلَقَدۡ جَآءَتۡهُمۡ رُسُلُنَا بِٱلۡبَيِّنَٰتِ ثُمَّ إِنَّ كَثِيرٗا مِّنۡهُم بَعۡدَ ذَٰلِكَ فِي ٱلۡأَرۡضِ لَمُسۡرِفُونَ ٣٢

Min ajli dhālika katabnā 'alā banī isrā'īla annahū man qatala nafsā bighayri nafsin aw fasādin fil-ardi faka'annamā qatalan-nāsa jamī'an waman ahyāhā faka'annamā ahyan-nāsa jamī'an walaqad jā'athum rusulunā bil-bayyināti thumma inna kathīram minhum ba'da dhālika fil-ardi lamusrifūn

Because of that, We decreed upon the Children of Israel that whoever kills a soul unless for a soul258 or for corruption [done] in the land259 - it is as if he had slain mankind entirely. And whoever saves one260 - it is as if he had saved mankind entirely. And Our messengers had certainly come to them with clear proofs. Then indeed many of them, [even] after that, throughout the land, were transgressors.261

Footnotes

258 i.e., in legal retribution for murder.

259 i.e., that requiring the death penalty.

260 Or refrains from killing.

261 Heedless of Allāh's limits, negligent of their responsibilities.