Is it true that Shaykh Muhammad ibn 'Abd al-Wahhab (may Allah have mercy on him) invalidates the books of the four schools of jurisprudence?

The questioner:
Among them is his statement that I invalidate the books of the four schools of jurisprudence.

The Shaykh:
It is true that the Shaykh invalidates the books of the four schools of jurisprudence. This is one of the greatest lies. The Shaykh studied under the Hanbali school. He does not stick rigidly to the Hanbali school, but rather he takes what is supported by evidence from the Shafi'i school, the Maliki school, or the Hanafi school.
This is the Shaykh's methodology. He is originally on the school of Imam Ahmad, but in issuing rulings he takes what is stronger by evidence, whether from the school of Imam Ahmad or from others. He is not biased; he seeks the truth. This is his methodology in issuing rulings and teaching: he takes what is stronger by evidence from any of the four schools, but he does not go outside the four schools; he does not go outside them. Yes.

The questioner:
Among them is his statement that I invalidate the books of the four schools of jurisprudence, and that I say that the people from whom I am...

The Shaykh:
He did not go outside the four schools of jurisprudence; rather, he benefits from them and issues rulings based on what is stronger by evidence among them, whether it agrees with his Hanbali school or not, because he seeks the truth. Yes.