Is saying "There is no god but Allah" aloud when establishing the prayer disliked, and is it an act not proven from the Prophet, peace and blessings be upon him, or his Companions?

The Sunnah is for the listener of the Iqama to say the same words as the one calling the Iqama, except for "Hayya ‘ala as-Salah (Hasten to the prayer)" and "Hayya ‘ala al-Falah (Hasten to success)," for which one says: "La hawla wa la quwwata illa billah (There is no might or power except with Allah)." And when the one calling the Iqama says: "Qad qamati as-Salah (The prayer has commenced)," one says: "Aqamaha Allahu wa adamaha (May Allah establish it and perpetuate it)." As for saying "La ilaha illa Allah (There is no god but Allah)" during the Iqama, it is legislated and there is no objection to it, as long as one does not raise their voice with it, thereby disturbing others.