Muhammad used to raid and loot caravans travelling to Mecca. Those caravans did not harm Muhammad at all. He was a thief stealing from innocent traders and killing them for their goods.

Did he take the quran to them? No! He did not take the quran to anyone. The quran was not written at the time. He took sword. Not to spread the quran, but to spread terror and pain.

The narration of him stealing and robbing caravans is mutawatir and that means it is narrated by so many scholars from the Companions down to the authors of books that it cannot be doubted. It has been narrated by:

110 Companions - ashab - of the Prophet Muhammad (s)
84 Successors - tabi’un
And several hundred known Sunni scholars across history.
And this has been demonstrated and stands documented, name by name and isnad by isnad.