Shaykh Bin Baz said, “It is obligatory to cooperate [with other Muslims] in that which we [Salafis and they themselves] agree, by aiding the truth, calling to it and warning against that which Allaah and His Messenger sallallaahu ‘alayhi wa sallam have prohibited.
As for excusing each other for that in which we differ – then this is not to be taken in an absolute sense, but rather in a general one.
Thus, if the difference involves a particular issue of ijtihaad (a scholar looks through the Quran and Sunnah to find the answer to a new or unclear issue) wherein the proofs are deep and detailed – then it is obligatory not to reproach or censure one another.
However, if it opposes a clear text of the Book and the Sunnah, then it is obligatory to correct the one who has opposed the clear texts, but with wisdom, beautiful admonition and debating in the best possible manner.
[This is by] acting upon Allaah the Most High’s saying, “And help you one another in righteousness and piety, but do not help one another in sin and transgression.” [Soorah al-Maa’idah 5:2]
And His the Most Perfect’s saying, “The Believers – man and woman – are protectors to each other, they order the good and forbid the evil…” [Soorah at-Towbah 9:71].
And His the Mighty and Majestic’s saying, “Invite to the way of your Lord with wisdom and beautiful admonition, and argue with them in ways that are better.” [Soorah an-Nahl 16:125].
And he sallallaahu ‘alayhi wa sallam said, “Whosoever sees an evil, then let him change it with his hand. If he is unable to do this, then with his tongue, and if he is unable to do this, then with his heart. And that is the weakest of eemaan (faith).”
And he sallallaahu ‘alayhi wa sallam said, “Whosoever directs a person to do good, will have a reward similar to the one who does that good.” [Muslim (13/38)]
And the aayaat (verses) and ahaadeeth with this meaning are plenty.””
Ref: Tanbeehaat fir-Radd ‘alaa man Ta’awwalis-Sifaat (pp.14-15) via the Article: “Clarity” in Istiqaamah Magazine, Issue No.2 ,1996
Posted by Abdul Kareem Ibn Ozzie