The Prayer Attendant's Position Regarding a Preacher Who Calls to Religious Innovations

Question:
I was with Zafir and Rabi at the table, and he used to pray with him and teach him, and Abu Lahab used to be called to be taught about your deeds.

Answer:
If he has the ability. If you have knowledge, then you should point it out and comment on the sermon with wisdom and gentleness, without any quarreling or arguing. You comment on the sermon with good words and clear evidence, and, if Allah wills, the truth will become clear. But if you do not have knowledge, then you should report this preacher to the authority responsible for the mosques in order to have him removed from the mosque. One who calls to religious innovations (bid'ah) is not fit to be an imam or a preacher. And this country, praise be to Allah, does not approve of these matters. The officials are obligated to remove this one who calls to religious innovations and put in his place someone better than him.
The bottom line is that silence is not permissible. If you are able to respond and comment, then respond and comment. If you are not able, then report his case to the nearest Ministry of Awqaf office to address this preacher.