بسم الله الرحمن الرحيم

Ash Shaykh Abdur Razzaaq bin Abdul Mohsin Al Badr (Allah preserve them both) wrote:

Whenever you call to The Book and the Sunnah, then you are calling to unity and togetherness. Because this is what unites the people; for if they are acquainted with the Book and the Sunnah and act upon them, they will unite, come together; have mutual love for one another, (establish) brotherhood, aid one another (in righteouness and piety and not in sin and transgression) and will be saved from being in opposition to one another and from splitting.

http://al-badr.net/muqolat/2646