What is the ruling on reciting verbal dhikr silently in the heart without vocalizing it or moving the tongue?

Question:
May Allah reward you. The listener, A-M-H, says: I read in Imam al-Nawawi’s book *Al-Adhkar* that the prescribed adhkar, whether in prayer or elsewhere, whether obligatory or recommended, are not counted or considered valid unless the one remembering vocalizes them in a way that he hears himself. Does this mean that whispering the dhikr or remembering it by moving the tongue only is not counted, especially if a person is accustomed to remembering silently and finds it difficult to remember with a loud, audible voice? Please inform us. May Allah reward you with good.

Answer:
What al-Nawawi (may Allah have mercy on him) said is correct, because dhikr is not called dhikr unless it is vocalized with words that the person hears himself, because it does not become speech except by that. As for the talk of the self and dhikr in the heart, this is not called dhikr; it is not called dhikr regarding the verbal adhkar that were reported for a person to say. The verbal adhkar require vocalization to the extent that one hears oneself. If one raises his voice with it, that is better, so that the creatures who hear his voice can testify for him. Yes.