How do we unite the Ummah upon the word of truth and end the fabricated differences between those who call themselves Wahhabis and Sufis?

It is not permissible to differ concerning the agreed-upon fundamentals of religion. The saved sect are the People of the Sunnah (definition) and the Community (Ahl al-Sunnah wal-Jama'ah), those who adhere to the Qur'an and the Sunnah, who follow the path of the Prophet, peace and blessings be upon him, and his companions. They are few in number, but they do exist. Disagreement within the Ummah is a matter of divine decree. A Muslim should adhere steadfastly to Allah's command, seek out the People of the Sunnah and the Community, join them, invite others to their methodology, and be patient in enduring tribulation.