Not Divided
Hold tightly to the rope of Allah together and do not be divided.
3:103And hold fast, all of you together, to the cable of Allah, and do not separate. And remember Allah's favour unto you: How ye were enemies and He made friendship between your hearts so that ye became as brothers by His grace; and (how) ye were upon the brink of an abyss of fire, and He did save you from it. Thus Allah maketh clear His revelations unto you, that haply ye may be guided,
Let there be a community among you that calls to goodness, enjoins justice, and forbids wrongdoing, these are the successful ones.
3:104And there may spring from you a nation who invite to goodness, and enjoin right conduct and forbid indecency. Such are they who are successful.
A believer should never kill another believer, except by mistake.
4:92It is not for a believer to kill a believer unless (it be) by mistake. He who hath killed a believer by mistake must set free a believing slave, and pay the blood-money to the family of the slain, unless they remit it as a charity. If he (the victim) be of a people hostile unto you, and he is a believer, then (the penance is) to set free a believing slave. And if he cometh of a folk between whom and you there is a covenant, then the blood-money must be paid unto his folk and (also) a believing slave must be set free. And whoso hath not the wherewithal must fast two consecutive months. A penance from Allah. Allah is Knower, Wise.