Sunan Abi Dawud Book 2, Hadith 133

when you hear the mu'adhdhin repeat what he says, invoke a blessing on me, for everyone who invoke one blessing on me will receive ten blessings from Allah. Then ask Allah to give me the wasilah, which is a rank in paradise fitting for only one of Allah’s servants, and I hope that I may be the one. If anyone asks Allah that I be given the wasilah, he will be assured of my intercession.

Previous Hadith

When you hear the Adhan, you should repeat the same words as the mu’adhdhin pronounces.

Sunan Abi Dawud Book 2, Hadith 132
Next Hadith

A man said: Messenger of Allah, the mu'adhdhins excel us. The Messenger of Allah (ﷺ) said: Say (the same words) as they say, and when you come to the end, make a petition and that will be granted to you.

Sunan Abi Dawud Book 2, Hadith 134