In light of the sectarian violence in Iraq and intense polemical debates between traditional Muslims and Salafis, progressive Muslims, and everyone else who believes their community is on the right path and everyone else is deviant:
Hold fast to the Rope of Allah, all together, and be not divided. (Qur’an, 3:103)
Surely, those who have made divisions in their religion and turned into factions, you have nothing to do with them. Their case rests with Allah; then He will inform them of what they used to do. (Qur’an, 6:159)
Suhaib Webb has posted a pledge entitled “Pledge of Mutual Respect and Cooperation Between Sunni Muslim Scholars, Organizations, and Students of Sacred Knowledge” A number of prominent Muslim figures signed the pledge.
One hopes the list of signees would get longer.