SHAFAQNA – Imam Ali (AS) said: Be aware that now you have given up obeying (God), and by reviving (bringing back) the values of the days of ignorance, you have broken the strong Divine Fortress (for yourself), whilst Allah (SWT) obliged this Islamic nation by (granting it) unity and brotherhood to live under these shadows (under the protection of unity and brotherhood). This was a blessing which no other value can be imagined like it (nothing better than unity). Know that after hegira, once again you have become like desert Arabs and after unity and brotherhood, you have been divided into different groups. From Islam only its name remains and you do not recognize anything from the belief except a sign (nothing left of the belief except a sign) .
 Nahjul Balaghah, Sermon 192.