Indeed, the purpose of the effort of Tablῑgh is to jolt people out of their spiritual slumber and create a revolution of Dῑn in their hearts. The Fuqahā have mentioned that Dῑn cannot be taught to people without the correct knowledge and understanding of Dῑn.
It is written in Al Fatāwa Al Hindiyyah:
الْأَمْرُ بِالْمَعْرُوْفِ يَحْتَاجُ إِلَى خَمْسَةِ أَشْيَاءَ أَوَّلُهَا الْعِلْمُ لِأَنَّ الْجَاهِلَ لَا يَحْسُنُ الْأَمْرُ بِالْمَعْرُوْفِ
(الفتاوى الهندية ج5 ص353 مكتبة رشيدية)
“There are five pre-requisites for commanding good and prohibiting evil, the first of them is [correct] knowledge [of Dῑn] for an ignorant person cannot properly command good and prohibit evil”
(Al Fatāwa Al Hindiyyah, page 353, volume 5, Maktabah Rashῑdiyyah Edition)
The rulings of the Fuqahā clearly indicate that when a person is ignorant or has become ignorant of the knowledge of Dῑn, and he makes unIslāmic comments and irresponsible statements, then he is no longer able to fulfil the purpose of Tablῑgh.
The sentiments of the Fuqahā also indicate that those individuals who are entrusted the responsibility of guiding the people must prohibit the people from reading or listening to any material which may affect their guidance.