Sayyiduna Uthman bin Abi al-As (may Allah be pleased with him) says: I said, "O Messenger of Allah! Make me the imam of my people." The Prophet (peace and blessings be upon him) said: (Alright), you are their imam. Take care of the weakest among them and appoint such a muezzin who does not take wages for his call to prayer.
Hadith Referenceالفتح الربانی / كتاب الصلاة / 1281