If Islam is a “valid” Abrahamic religion, where are the Ten Commandments? In fact, where is there even any remotely equivalent foundations to their cult? Islam calls on Faith, Prayer, Charity, Fasting, and Journey to Mecca. None of these disavows murder, or stealing, or lying, or anything like reciprocity with anyone NOT professing to these doctrines. They even go off into a frenzy of rage and hatefulness when another Muslim makes even a small deviation from the One Right and Proper interpretation of what some sun-crazed old pedophile schizophrenic sand hermit said fourteen centuries ago.
Even Scientology is much more specific in describing its founding principles, but then, Scientology also had the advantage of being drawn up by people who were more than just semi-literate goat herders.
What I read was that in the beginning Mohammad entertained Jews, Christians and Zoroastrians. He gleaned information from them and started his scribes writing (Mad Mo couldn’t read or write). As he aged he became more violent and so did the Qu’ran hence the rule that later scribblings override earlier ones.