السلام عليكم ورحمة الله وبركاته If a Sheikh publicly makes Takfir of all the rulers and says theres no Bayah, and after speaking to them with the hujjah, is still firm upon this position, is it enough to state not to take knowledge from them, or should we as laymen do Tabdi on them based on this?

Ustadh AbdulAziz al-Haqqan

Yes knowledge is not to be taken from him and he should be warned against.