One such example from Baha'u'llah of how he himself refers to them is:
Say: O people, if ye judge fairly and equitably, ye will testify to the truth of whatsoever hath streamed forth from the Most Exalted Pen. If ye be of the people of the Bayán, the Persian Bayán will guide you aright and will prove a sufficient testimony unto you; and if ye be of the people of the Qur’án, ponder ye upon the Revelation on Sinai and the Voice from the Bush which came unto the Son of ‘Imrán [Moses].
Gracious God! It was intended that at the time of the manifestation of the One true God the faculty of recognizing Him would have been developed and matured and would have reached its culmination. However, it is now clearly demonstrated that in the disbelievers this faculty hath remained undeveloped and hath, indeed, degenerated.
O ‘Alí! That which they accepted from the Bush they now refuse to accept from Him Who is the Tree of the world of existence. Say, O people of the Bayán, speak not according to the dictates of passion and selfish desire. Most of the peoples of the earth attest the truth of the blessed Word which hath come forth from the Bush.
By the righteousness of God! But for the anthem of praise voiced by Him Who heralded the divine Revelation, this Wronged One would never have breathed a word which might have struck terror into the hearts of the ignorant and caused them to perish. Dwelling on the glorification of Him Whom God shall make manifest—exalted be His Manifestation—the Báb in the beginning of the Bayán saith: ‘He is the One Who shall proclaim under all conditions, “Verily, verily, I am God, no God is there but Me, the Lord of all created things. In truth all others except Me are My creatures. O, My creatures! Me alone do ye worship.”’ Likewise in another instance He, magnifying the Name of Him Who shall be made manifest, saith: ‘I would be the first to adore Him.’ Now it behoveth one to reflect upon the significance of the ‘Adorer’ and the ‘Adored One’, that perchance the people of the earth may partake of a dewdrop from the ocean of divine knowledge and may be enabled to perceive the greatness of this Revelation. Verily, He hath appeared and hath unloosed His tongue to proclaim the Truth. Well is it with him who doth acknowledge and recognize the truth, and woe betide the froward and the wayward.
- from the Tablet named TAJALLÍYÁT
Or another passage:
Beware, beware lest thou behave like unto the people of the Bayán. For indeed they erred grievously, misguided the people, ignored the Covenant of God and His Testament and joined partners with Him, the One, the Incomparable, the All-Knowing. Verily they failed to recognize the Point of the Bayán, for had they recognized Him they would not have rejected His manifestation in this luminous and resplendent Being. And since they fixed their eyes on names, therefore when He replaced His Name ‘the Most Exalted’ by ‘the Most Glorious’ their eyes were dimmed. They have failed to recognize Him in these days and are reckoned with those that perish. Indeed, had they known Him through His own Self or by virtue of that which He hath revealed, they would not have repudiated Him when He appeared in this glorious and incomparable Name, which God hath ordained to be the Sword of His Revelation between heaven and earth, and through which truth is separated from error, even from now until the Day when mankind shall stand before the Lord of the worlds.
- from the Tablet named SÚRIY-I-VAFÁ