Sunan an-Nasa'i 672
سنن النسائي#672SahihIt was narrated that 'Uthman bin Abi Al-As said:"I said: 'O Messenger of Allah (S.A.W), make me the Imam of my people.' He said: 'You are their Imam, so consider the weakest among them and choose a Mu'adhdhin who does not accept any payment for his Adhan
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Abu GhuddahSahih
Al-AlbaniSahih
Zubair Ali ZaiIsnaad Sahih
In-book reference: 7:47