Is it permissible to add melodic ornamentation to the adhan?

Question:
Honorable Shaykh, may Allah grant you success, he says: Is it permissible to add melodic ornamentation to the adhan and to use long notes in it?

Answer:
It is recommended to beautify the voice in the adhan, because the Messenger (peace and blessings be upon him) said regarding Bilal, “The one with the most beautiful voice,” meaning the one with the best voice. So it is recommended to beautify the voice in the adhan. As for melodic ornamentation, this is prohibited because it turns the adhan into singing. However, if the ornamentation is light, it does no harm. But if it is forced and turns the adhan into something resembling singing, then it is not permissible. Yes.