Uthmān ibn Abu al-‘Ās (may Allah be pleased with him) reported that he said: "O Messenger of Allah, make me the leader of my people!" He said: You are their leader; be considerate to their weak ones, and choose a Muezzin who does not take wages for his Adhān.” [An-Nasaa’i]

"عن عثمان بن أبي العاص -رضي الله عنه- قال: يا رسول الله، اجعلني إمام قومي، قال: «أنت إمامهم، وَاقْتَدِ بأضعفهم، وَاتَّخِذْ مُؤَذِّناً لا يأخذ على أذانه أجرا». [صحيح.] - [رواه أبو داود والنسائي وأحمد.]