Surah 8. Al-Anfal, Ayah 73

The fact of their being bent on denying the truth of the divine message constitutes, as it were, a common denominator between them, and precludes the possibility of their ever being real friends to the believers. This refers, of course, to relations between communities, and not necessarily between individuals: hence my rendering of the term awliya', in this context, as "allies".

Evil consorts with evil. The good have all the more reason for drawing together and not only living in mutual harmony, but being ready at all times to protect each other. Otherwise the world will be given over to aggressions by unscrupulous people, and the good will fail in their duty to establish Allah's Peace and to strengthen all the forces of truth and righteousness.