Ibn al-Qayyim رحمه الله, he said:
Ignorance is a destructive disease and it’s cure is two things: The text from the Qur’an and the Sunnah.
Source: Taken from the Lecture, The Fear of Shirk|Explanation of Kitab
Al-Tawheed by Shaikh Salih Al- Fawzan
Lesson 7, Taught by Ustadh Hassan
Somali, 8:52-9:32|1:09:45 GMT Time, Germantown Masjid (Youtube channel)