I think you should inform yourself as to what murder actually means. Lets start with the definition:It really is telling when an Islamist prefers a society that murders women in public to 'sluts'.
https://www.lexico.com/definition/murder"The unlawful premeditated killing of one human being by another"
Key word being "unlawful". If a country by law punishes a crime, even if execution, then it is not murder.
As for adultery, I take it you as a Jew have not heard of Leviticus 20:10:
https://www.biblegateway.com/passage/?search=Leviticus+20%3A10&version=NIV"If a man commits adultery with another man’s wife - with the wife of his neighbour—both the adulterer and the adulteress are to be put to death"