Is it a sin for a Muslim not to make efforts to understand something that confuses his mind?

- According to Ahl as-Sunnah scholars, it is a great sin for a Muslim not to make efforts to understand something that confuses his mind.
- What verses of the Quran and hadiths did Ahl as-Sunnah scholars regard as evidence for this thought?

Dear Brother / Sister,

Numerous verses and hadiths state that it is fard for those who are aware of the true religion to believe in it.

If states and activities that prevent belief like doubt, lack of information, counter propaganda and suggestions interfere, it is fard to make efforts in order to eliminate them “as a necessity of the fard of believing”.

Questions on Islam