That would be Baha'u'llah in His Laws. He gave Leave in Law, for peoples of the world to build the Temples;
"O people of the world! Build ye houses of worship throughout the lands in the name of Him Who is the Lord of all religions. Make them as perfect as is possible in the world of being, and adorn them with that which befitteth them, not with images and effigies. Then, with radiance and joy, celebrate therein the praise of your Lord, the Most Compassionate. Verily, by His remembrance the eye is cheered and the heart is filled with light. (The Kitab-i-Aqdas, pp. 29-30, para 31)
Regards Tony
So the obvious fact that a Hindu India gave safe haven to The Jewish people, various Christian sects, moderate Islam, Baha'i', and more is all due to Baha'u'llah, 200 years ago, not 5000 years ago.
The only reason there is a Baha'i' temple in India is because the Hindus are so incredibly tolerant.
Thus blind, 'all credit to Baha'u'llah thing simply doesn't give credit where credit is due.
Some Hindu temples in India are over 2000 years old, and many existed way before that. But it's all because of some modern day prophet?