From the INTRODUCTION:

Object of the book.

In publishing this work, my chief object is to remove the general and erroneous impression from the minds of European and Christian writers regarding Islam, that Mohammad waged wars of conquest, extirpation, as well as of proselytizing against the Koreish, other Arab tribes, the Jews, and Christians; that he held the Koran in one hand and the scimitar in the other, and compelled people to believe in his mission. I have endeavoured in this book, I believe on sufficient grounds, to show that neither the wars of Mohammad were offensive, nor did he in any way use force or compulsion in the matter of belief.
--MOULAVI GHERAGH ALI