Aberamentho
Gnosis
What do you mean, "How do I know?" It's right there in there Quran. Whether a Muslim actually follows that, it's up to them. But there are multiple quotes that say it's forbidden.
"There shall be no compulsion in the religion. The right course has become clear from the wrong. So whoever disbelieves in Taghut and believes in Allah has grasped the most trustworthy handhold with no break in it. And Allah is Hearing and Knowing." [2:256]"
I remember answering this for you last night, haven't heard back from whoever was dumb enough to claim you were assuming, I gave the same quote too.
This forum has a LOT of nitwits.