All perfect praise be to Allaah, the Lord of the worlds. I testify that there is none worthy of worship except Allaah, and that Muhammad, sallallaahu ‘alayhi wa sallam, is His slave and messenger.
The narrations cited by this Imaam, that urge people to make use of them and to act accordingly, are either fabricated narrations about the Prophet, sallallaahu ‘alayhi wa sallam, or weak but are related to the creed and rulings. In both cases it is unlawful for him to mention them and it is also the duty of whoever hears him and knows that they are so, to leniently and gently advise him and explain to him the mistake he has committed, even if this occurs inside the mosque. However, the etiquettes of the mosque has to be observed and anything contradictory to this, like raising one's voice, has to be avoided.
On the other hand, these narrations may be weak but discuss only recommended good deeds. If this is the case then there is nothing wrong with mentioning them to people because the majority of scholars permitted that with certain conditions, which we have explained in Fatwa 86128.
Allaah Knows best.