For the true believers

"This Book is not to be doubted.  It is a guide for the righteous, who believe in the unseen and are steadfast in prayer; who give in alms from what We gave them; who believe in what has been revealed to you (Muhammad) and what was revealed before you (the Torah and the Gospel), and have absolute faith in the life to come (Resurrection, recompense of their good and bad deeds, Paradise and Hell).  These are rightly guided by their Lord; these shall surely triumph."  [from Surat 2:1, the Noble Qur'an]

"Thou shalt not kill."  [from Exodus 20:13, Holy Bible]

"You have heard that it was said by them of old time, Thou shalt not kill; and whosoever shall kill shall be in danger of the judgment; but I say unto you, That whosoever is angry with his brother without a cause shall be in danger of the judgment."  [from the Gospel according to Matthew 5:21-22, Holy Bible]