You never even picked up a koran and read it. I bet you've seen a Bible and possibly read a few scriptures. Everything else came to you through some liberal filter.
For the record, the vast majority of Western Law came directly from the scriptures. Everything from laws and punishment for murder, kidnapping, and faggotry, to laws and punishment for fucking anothers wife, buggery, and public decency.
Thank The God of Israel and His Bible for all of it!