They are the ones who disbelieved , and barred you from the Holy Mosque and the offering , detained so as not to reach its place of sacrifice . If it had not been for certain men believers and certain women believers whom you knew not , lest you should trample them , and there befall you guilt unwittingly on their account ( that God may admit into His mercy whom He will ) , had they been separated clearly , then We would have chastised the unbelievers among them with a painful chastisement .