Regretably...
Regretably, they failed in both categories by falling into contradictions and making gross errors of judgment as the following points show: They relied entirely on interpretations based on the literal meaning of the texts, and thus they contradicted basic tenets and ijam, the consensus of religious scholars.
This is why the Egyptian religious scholar of the last century, Muhammad Abdo, described them as worse than those who follow others blindly because they "believe that the literal meanings must be endorsed and adhered to without paying heed to the basic tenets on which religion is based." 2 They contradicted Ahmed ibn Hanbal clearly and openly in pronouncing as blasphemers and heretics Muslims who disagreed with them though none of Ibn Hanbal's religious decrees support this.
According to Ibn Hanbal, only a Muslim who intentionally refuses to perform obligatory prayers can be called a blasphemer or heretic. Similarly, no support for this Wahabi belief can be found in the works of Ibn Taimia. Indeed, Ibn Taimia opposed such thinking.
He maintained that "whoever approved of those in agreement with him and condemned those who opposed him, created schisms in the ranks of Muslims, labeled those who disagreed with him regarding points of opinion and logical deduction as heretics, and approved waging was on them is a person who seeks to divide and create discord." This description by Ibn Taimia fits the Wahabis completely.
3 If the Wahabi doctrine on visiting shrines is endorsed then Imam Ahmed ibn Hanbal and all his followers are idolators who must be denounced and their lives and possessions legally forfeited. This is in view of a report by none other than Ibn Taimia that Imam Ibn Hanbal wrote a treatise on visiting the shrine of Imam al-Hussain ibn Ali (the grandson of the Prophet) at Kerbala with specific instructions for visitors.
Ibn Taimia commented on this that «people at the time of Imam Ahmed [ibn Hanbal] frequented [the shrine].» 4 But the Wahabi creed considers making a journey to a shrine for the purpose of visiting it a form of idolatry which deserve the extreme punishment of loss of life and possessions. In effect, they condemned Imam Ahmed, his contemporaries and early Muslims who practiced this ritual and condoned it as idolators who must be put to death and their possessions confiscated.
Furthermore, this Wahabi decree must also extend to the Prophet who approved or performed this ritual.