You have left things out of the verse and not recorded the following verse:

005.032
SHAKIR: 'For this reason did We prescribe to the children of Israel that whoever slays a soul, unless it be for manslaughter or for mischief in the land, it is as though he slew all men; and whoever keeps it alive, it is as though he kept alive all men; and certainly Our messengers came to them with clear arguments, but even after that many of them certainly act extravagantly in the land.'

This is written in the past tense and refers only to a previous instruction by Yaweh to 'the children of Israel', doesn't say it's binding on muslims.