The imam is responsible and the mu'adhdhin is trusted, O Allah, guide the imams and forgive the mu'adhdhins. (Using translation from Abū Dāʾūd 517)
عَنِ النَّبِيِّ ﷺ قَالَ الْإِمَامُ ضَامِنٌ وَالْمُؤَذِّنُ مُؤْتَمَنٌ اللهُمَّ أَرْشِدِ الْأَئِمَّةَ وَاغْفِرْ لِلْمُؤَذِّنِينَ