To address a lot of the questions and arguments of distortions made by Bahāʾīs here:
If you don't know of this, then clearly you've only studied what your Bahāʾī leaders have allowed to be translated and distributed to the masses. Are you not fluent in Arabic or Persian?
The relevant text is found in Unity 8, Gate 15 of the Persian Bayān:
This statement is pretty clear. The Bāb made it obligatory to marry and to have children. This was according to the general pattern of his laws, which took many the recommended actions within Islam and made them obligatory (among them this and the recommendation to have only one wife). According to the Bāb, if a spouse is infertile, then the other can marry again so as to have children, but only under these circumstances and only with the permission of their spouse. In other places, the Bāb makes it clear that only one wife is allowed under normal circumstances (8:2). None of the special circumstances were present in the case of Bahāʾuʿllah, so in reality, he was transgressing against the Bāb's laws when he took his second wife, and doing it again with Gawhar. His first wife was not infertile.
Incidentally, this fact (that the Bāb prohibited polygamy under normal circumstances) is even recognized by Bahāʾī authors: "She [Tahirih] began to correspond with the Bab and soon espoused all his ideas [....]
She denounced not only polygamy but the use of the veil" (
The Dawn-Breakers, p. 270 [footnote])."
In summary, the Bāb allows bigamy but only if the original spouse is infertile.