What is the ruling on saying "Subhan Allah" (glorifying God) and "Astaghfirullah" (seeking forgiveness from God) using a rosary (masbaha) during the Friday sermon, and does it invalidate the Friday prayer?

Moving the prayer beads for tasbih or istighfar during the khutbah contradicts listening attentively and is forbidden, as it falls under anything that contradicts attentive listening, such as eating, drinking, or moving something that makes a sound. Also, merely engaging in the remembrance of Allah during the khutbah is not legislated according to some scholars if there is no reason for it. And whoever engages in idle talk during the khutbah, their Friday prayer is still valid but deficient in reward.