Is it sunnah for the listener on Friday to say "Ameen" to the preacher's supplication at the end of the sermon?

It is sunnah for the listener to the khateeb's supplication on Friday to say "Ameen" (Amin) to his supplication, according to the majority of scholars (Malikis, Shafi'is, and Hanbalis). This "Ameen" should be said silently according to the Malikis and Hanbalis, and without raising the voice according to the Shafi'is. As for the Hanafis, they say "Ameen" in their hearts, not with their tongues. The congregant should not raise their hands while saying "Ameen" because there is no established proof for it, and similarly, the khateeb should not raise his hands during the supplication.