“Verily, the glory (al-baha’) of God be upon your rising, O rising sun! Testify to that which God hath testified of His Own Self: Verily, there is no God but Him, the Almighty, the Best-Beloved.”
The Bab, Arabic Bayan, 7:17.
Someone wants to know the secret of what was revealed to him that came before me regarding the sun and his standing while facing it. Blessed is the one who asked this question and wanted to know what was concealed from the hearts of the worlds. Say: I swear by God that what he meant by the sun is my beauty that has shown forth from behind the clouds with great lights. Because we made the sun to be the greatest of our signs between heaven and earth, he stood facing it, submissive to my Self, the Inaccessible, the Powerful, the Most High. When he rose facing it during the first part of his day, he spoke a word for which there is no loftier or greater in God’s knowledge, if you be of those who know. When he gazed upon it, he said, and his word is the truth, “Verily, The glory (al-baha’) of God be upon your rising, O rising sun! Testify to that which God hath testified of His Own Self: Verily, there is no God but Him, the Almighty, the Best-Beloved.” This was so that all would attain certain knowledge of the inmost secret through the appearance of the sun and testify to that which God has testified, that there is no God but Him, the Almighty, the Best-Beloved.
…He disclosed the Greatest Name so that everyone would bear witness on the day of revelation to what he had seen. This word is mentioned as one of the fundamentals of the divine commands revealed in the Bayan and each soul in this day must turn toward God on Friday and utter these words, calling to mind the beloved of the world.
Baha’u’llah, excerpted in Ma’idih-yi Asmani, 8:104-5.