Dawood Bhai sorry but could not stop myself from asking you following:
Do you mean Nada = Azan?
The root ن د و is used 53 times in Al-Quran. Do you mean it refers to azan. For example 20:11
فَلَمَّآ أَتَٮٰهَا نُودِىَ يَـٰمُوسَىٰٓ
So when he came to it, he was called, “O Musa,
Do you mean Day of Jumua = sixth day of the seven day week?
Was there a day of week called Jumua in 6th century Arabia?
Do you remember the fairy tale about how the ritual of azan was agreed upon? Any bells ringing in your mind?
Please excuse me for interrupting you in your discussion.