Nahjul Balagha, Sermon 126
Ali says:“With regard to me, two categories of people will be ruined, namely he who loves me too much and the love takes him away from rightfulness, and he who hates me too much and the hatred takes him away from rightfulness. The best man with regard to me is he who is on the middle course. So be with him and be with the great majority of Muslims because Allah’s hand of protection is on keeping unity. You should beware of division because the one isolated from the group is a prey to Satan just as the one isolated from the flock of sheep is a prey to the wolf. Bew