Uniting Upon Correct Belief
Question: It is noticeable that most Muslim minorities around the world concentrate on uniting the Muslims while neglecting to establish pure and correct Islaamic belief. What, your Eminence, do you have to say about this manhaj?
Response: The call to unite the Muslims is, whichever way you look at it, a good thing and very important and there is a pressing need for it. However, if knowledge and correct understanding of religion and the tenets of faith accompany it, then this is more complete and more obligatory. This is because their uniting upon incorrect tenets of belief does not satisfy, nor fulfil what is required and does benefit them greatly. It is therefore necessary that the method of inviting is complete. It should be to unity and to holding firmly to the Rope of Allaah and adherence to His Religion while stressing the importance of correct belief. This is how the Messenger, prayers and peace be upon him, and his noble companions (radhi-yallaahu ‘anhum) proceeded so that the method of inviting might be comprehensive and complete.
Shaykh Ibn Baaz
al-Aqalliyaat al-Muslimah – Page 34, Fatwa No.8