Is it permissible for those outside the mosque who cannot see the Imam for one of them to lead them in the Friday prayer when there is a power outage?

If those for whom the Imam's voice became inaudible during the Friday prayer, and they could not see him, put forward one of their own to lead them in completing their prayer, then their prayer is valid. This is because the Imam whose voice became inaudible and who could not be seen is considered in the position of someone unable to complete the prayer. Therefore, there is no harm in putting someone else in his place, as narrated in Al-Bukhari from Amr ibn Maymun concerning the story of Umar ibn Al-Khattab (may Allah be pleased with him) and the appointment of Abdur-Rahman ibn Awf.