Gracing Brahma Creator of Four Vedas

Once, Brahma visited Lord Murugan. Murugan requested Brahma to enlighten him about the mystic ―Omkara‖ or ―Pranavaartha‖. Brahma told him that He, Brahma himself was the ―Omkara‖. 

This made Murugan angry. Putting Brahma in bondage, he took himself the role of creator. For this purpose, he took his abode in Tirumalai Hills as Lord Venkatachalapati. 

Lord Muruga punished Lord Brahma for his ignorance of the meaning of the Pranava mantra, by a hard knock on his vortex with His fist and then imprisoned him. After this, the creation came to a stand still becoz Brahma was imprisoned. So Lord Murugan assumed the creation duties of Lord Brahma. And most i,[osrtant point to be noted here is, at this stage, Valli being Murugan's Kriya Shakthi, assumed the role of his Consort - thus empowering him for the process of creation. (there are few more interesting aspects of the story which Iam not elaborating here)

This form of Murugan is called Brahma Sastha. In this posture, He holds a japamaalai in his upper right hand and a kamandalam in his upper left hand. The bottom two hands show Abhayam and Varadham.  

At the request of his father, he released Brahma, heeding to the prayers of the Devas.

Ayana -  Brahma  Varam - Boon
https://www.google.com/search?q=Ayanavaram

Also at
http://6kan.blogspot.com/search/label/KumaraKottam

Releasing from prison
https://08be.blogspot.com/search/label/Ajamukhi