Ayya Vaikundar was the incarnation of Ekam according to Akilathirattu Ammanai, the religious text of Ayyavazhi and the source of Ayyavazhi mythology. As the Ekam is the supreme power in Ayyavazhi, Vaikundar was the supreme power incarnate.
Ayya Vaikundar incarnated from the sea of Thiruchendur and after telling the secret about the incarnation to Veiyelal (the mother of Sampooranathevan known as Muthukutty in human history) he walked towards Detchanam. At that time Muruga met him and fell on his feet facing the north direction. At once Vaikundar told Muruga,
I am going to destroy the Kaliyan and so if you degrade my advice you will have to suffer a lot. Till now you have done so. Vaikundam had taken birth and is going to rule under single umbrella. So from here, Devas of all logas which were surrounded by Sky should obey me. Here are the rules for all of you
By saying so, Vaikundar produced "acts" for all god-heads.
The rules provided for the god-heads,
When saying this Vaikundar added, "If any one rejects this, you will have to suffer a lot."
Hearing this, Muruga accepted all of these, and promised to behave accordingly. Vaikundar replied, "If you accept, do the following things to symbolise that":
Muruga accepted this and Vaikundar told that until the final judgment, "I've to do several different characters, so expect me". By saying this Vaikundar proceeded towards Detchanam.