مِنۡ اَجۡلِ ذٰ لِكَ ۚكَتَبۡنَا عَلٰى بَنِىۡۤ اِسۡرَآءِيۡلَ اَنَّهٗ مَنۡ قَتَلَ نَفۡسًۢا بِغَيۡرِ نَفۡسٍ اَوۡ فَسَادٍ فِى الۡاَرۡضِ فَكَاَنَّمَا قَتَلَ النَّاسَ جَمِيۡعًا ؕ وَمَنۡ اَحۡيَاهَا فَكَاَنَّمَاۤ اَحۡيَا النَّاسَ جَمِيۡعًا ؕ وَلَـقَدۡ جَآءَتۡهُمۡ رُسُلُنَا بِالۡبَيِّنٰتِ ثُمَّ اِنَّ كَثِيۡرًا مِّنۡهُمۡ بَعۡدَ ذٰ لِكَ فِى الۡاَرۡضِ لَمُسۡرِفُوۡنَ(المائدة :32)
Min ajli thalika katabna 'ala banee israeela annahu man qatala nafsan bighayri nafsin aw fasadin fee alardi fakaannama qatala alnnasa jamee'an waman ahyaha fakaannama ahya alnnasa jamee'an walaqad jaa thum rusuluna bialbayyinati thumma inna katheeran minhum ba'da thalika fee alardi lamusrifoona
Sahih International:
Because of that, We decreed upon the Children of Israel that whoever kills a soul unless for a soul or for corruption [done] in the land - it is as if he had slain mankind entirely. And whoever saves one - 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.
Complete Indexing of Quran Topics
We have indexed and found 1 verse about or related to (including the word(s)) "Killing, If anyone killed a person he killed all mankind".
For your information, the verse as described above: