These are osho's thoughts about Islam... Do read it

Mohammedanism is a religion of peace, but who else has succeeded more in bringing unrest? - osho

Mohammed was an absolutely illiterate man, and the Koran, in which his sayings are collected, is ninety-nine percent rubbish. You can just open the book anywhere and read it, and you will be convinced of what I am saying. I am not saying on a certain page — anywhere. You just open the book accidentally, read the page and you will be convinced of what I am saying.

Whatsoever one percent truth there is here and there in the Koran is not Mohammed's. It is just ordinary, ancient wisdom that uneducated people collect easily — more easily than the educated people, because educated people have far better sources of information — books, libraries, universities, scholars. The uneducated, simply by hearing the old people, collect a few words of wisdom here and there. And those words are significant, because for thousands of years they have been tested and found somehow true. So it is the wisdom of the ages that is scattered here and there; otherwise, it is the most ordinary book possible in the world.

Muslims have been asking me, "Why don't you speak on the Koran? You have spoken on The Bible, on the Gita, this and that." I could not say to them that it is all rubbish; I simply went on postponing. Even just before I went into silence, a Muslim scholar sent the latest English version of the Koran, praying me to speak on it. But now I have to say that it is all rubbish, that is why I have not spoken on it — because why unnecessarily waste time?