" so if they argue with you (O Muhammad) tell them : I have submitted myself entirely to Allah and so have those who follow me. Then ask those who are given the book and those who are illiterate : will you also submit yourself to Allah? If they become Muslims they shall be rightly guided but if they turn their back, YOU NEED NOT WORRY, because your sole responsibility is to convey the message. Allah is watching all His servants closely . "
"give a warning to those who deny Allah's revelation, who SLAY THE PROPHETS WITHOUT ANY JUSTIFICATION , and who kill those among the people who enjoin justice that there is a painful punishment for them."
( al-e-Imran :20-32)