Bayan

The triliteral root bā yā nūn (ب ي ن) occurs in the Quran 523 times

In The Quran

First mention

(2:68) They said, "Call upon your Lord for us that He may clarify (Arab. يُبَيِّنْ, yubayyin) to us, which it is." He said, "He says it is a cow neither too old nor too young, an age between that. So now do as you are commanded."

Tools and Instruments of Preaching

(16:44) With the clear proofs (Arab. بِالْبَيِّنَاتِ, bil-bayināti) and The Hymns. We sent down to you The Methodology that you may clarify to the mankind, what was sent to them. Perhaps they will use allegorical thinking.

Moses's clear proofs

(2:92) Moses had come to you with the clear proofs (Arab. بِالْبَيِّنَاتِ, bil-bayināti), then you took the calf after him; you were wicked!