Analysis of information sources in references of the Wikipedia article "卡菲勒" in Chinese language version.
To begin with, there was no forced conversion, no choice between "Islam and the Sword". Islamic law, following a clear Quranic principle (2:256), prohibited any such things [...] although there have been instances of forced conversion in Islamic history, these have been exceptional.
The laws of Muslim warfare forbid any forced conversions, and regard them as invalid if they occur.
To begin with, there was no forced conversion, no choice between "Islam and the Sword". Islamic law, following a clear Quranic principle (2:256), prohibited any such things [...] although there have been instances of forced conversion in Islamic history, these have been exceptional.