If a Muslim scholar establishes the proof against a person, whether in declaring him a disbeliever, an innovator, or an open sinner, is it obligatory for a person to follow him, or is it obligatory for him to establish the proof himself?

The questioner : Okay, O Shaykh, if a scholar from among the scholars of the Muslims establishes the proof against a person by declaring him a disbeliever, an innovator, or an open sinner, is it obligatory for a person to follow this scholar, or does he have to establish the proof himself?

The Shaykh : This is not a condition; it is not a condition. Rather, what is obligatory is that one should be convinced that the proof has been established against the person who is to be declared a disbeliever, an open sinner, or an innovator. Otherwise, the matter will become a chain with no end.