Stance of mr Tijani on Quran and Sunnah is very strange, and apparent disbelief in both of them.
In his book “Shia hum Ahle-Sunnah” (p 123) he said:
القرآن والسنة لايعصمان من الضلالة فهما صامتان لايتكلمان ويحملان عدة وجوه
the Qur’an and Sunnah do not protect (anyone) from straying; they both are silent; they do not speak and they permit many interpretations
I don’t think that I need to comment this belief of mr Tijani.