He missed some of the words of Athaan (call to Prayer) mistakenly. Should he repeat it again?

Question 25: If the Mu’aththin (caller to Prayer) misses some of the utterances such as Takbeer (saying: “Allaahu Akbar [Allaah is the Greatest]”) or (Hayyi `ala Al-Salaah [come to Prayer!]), and after finishing the Athaan, some people alert him of the sentences he misses, will he be required to repeat the Athaan or what?

Answer: Yes, he should repeat the Athaan, because the said Athaan is not in conformity with the standard formula due to incomplete wording… read more here.