The theory of Agbnikula is related to the origin of Rajputs. This theory suggests that the Rajputs, who are a warrior Hindu caste, are descended from a mythical ancestral fire or "agni." According to this theory, the Rajputs are believed to have originated from the sacred fire that was created by Lord Agni, the Hindu god of fire.

The Agbnikula theory states that the Rajputs emerged from the flames of this sacred fire and were thus considered to be of divine origin. It is believed that the Rajputs were chosen by Lord Agni to serve as protectors of the Hindu dharma (religion) and to uphold righteousness.

It is important to note that the theory of Agbnikula is a mythical explanation and does not have any historical or scientific evidence to support it. Additionally, there are other theories and narratives surrounding the origin of Rajputs, and the Agbnikula theory is just one interpretation.