I've been told there are only three groups that their blood are halal to be killed which are: apostates, an eye for an eye case and adultery. Is this true? And are there other groups of people aside from these three? like homosexuals? I'm also wondering, as to why a husband is granted the permission to hit his wife if she's disobedient? Is physical response really necessary? And can it be vice versa? Hope I can clear all my doubts Thank you