Moving on to the Wahhabi leader Ibn Abdul Wahhab, whose followers we generally know as Wahhabis, and his views on Sufis. His son Abd Allah says, "My father and I do not deny or criticise the science of Sufism, but on the contrary we support it because it purifies the external and the internal of the hidden sins which are related to the heart and the outward form. Even though the individual might externally be on the right way, internally he might be on the wrong way. Sufism is necessary to correct it." [Ad Dia'at Al Mukhththafa Didd Ash Shaykh Ibn Abdul Wahab, P85]
I would like to know if this is a sahih saying, is the source reliable, is this book pro Ibn Abdul Wahhab or against him?
I just would like to have further information, if possible!