Saying this, she addressed her son as Swaminatha, and ever since, Lord Kartikeya also came to be known as Swaminatha. Goddess Parvati: ‘You have become a Guru (Swami) to my Lord (Natha)!’ Upon hearing this, Goddess Parvati (Mother of Lord Kartikeya and an incarnation of the Mother Divine) was elated and overcome with joy. This is the essence and also the secret of Om that Lord Kartikeya narrated to Lord Shiva.’ The Trinity – Lord Brahma, Vishnu, and Shiva are contained in Om. Kartikeya: ‘That the entire Creation is contained in Om. And then, in the ear of Lord Shiva, Lord Kartikeya explained the meaning of the Pranava Mantra (Om). So then Lord Shiva lifted the young Kartikeya onto His shoulders. But how can I find a seat higher than him, for he is the highest and greatest of Gods?’ The teacher has to sit at a higher place, and the student has to sit down and listen to him. Lord Shiva: (Thinking to himself) ‘Guru means he must be in a higher position or platform. Only if you put me on the pedestal of the Guru can I tell you’, said Kartikeya. You have to give me the place of the Guru. Lord Shiva: ‘Then tell me the meaning since you know it.’ To this, Kartikeya replied, ‘Then you tell me, what is the meaning of Om?’ Hearing this, Lord Shiva smiled and said, ‘Even I don’t know.’ Kartikeya then said, ‘Then I will tell you because I know the meaning of Om.’
Lord Shiva said that he must learn from Lord Brahma, as he is the supreme creator.
Later on, when asked by Lord Shiva, he explained the whole episode to him. Brahma explained to him, but he was not satisfied. Once Kartikeya asked Lord Brahma to explain the meaning of Om. Ego is necessary for life, but it should be kept subdued. This also means that the ego should always be kept subdued. Taraka prayed to always be at the feet of the Lord, and so Lord Kartikeya made him the emblem on his flag. After defeating Taraka (ego) in battle, Kartikeya spared his life and asked him what boon he would desire. So, Tarakasur (ego) became a chicken or rooster after being defeated by Kartikeya. In another version, Tarakasur was defeated by Lord. On his other hand, he carries a small flag on which there is a rooster. If you look at the idol of Kartikeya, on the one hand, He carries a spear. From one half, Murugan pulled a rooster, which he made his emblem, and from the other, a peacock, which he made his mount. He took the form of a tree and began to pray. After provoking Lord Murugan in combat, Surapadma repented at the moment his lance descended upon him. This peacock was originally an Asura called Surapadma, while the rooster was called the angel, Krichi. Kartikeya, also known as Lord Murugan in Southern India, is also mounted on a peacock. The Vehicle he rides is a peacock called Paravani. Kartikeya was cared for by six women symbolizing Pleiades (Kritika in Sanskrit) and thus got the name Kartikeya. Finally, the fireball took the form of a baby with six faces – Eesanam, Sathpurusham, Vamadevam, Agoram, Sathyojatham, and Adhomugam, and hence the name Shanmuga or Shadanan. Then Goddess Parvati took the form of this water body as she alone could bear the energy of Shiva and Shakti. Unable to bear the heat, Agni gives the radiance to Ganga. Lord Shiva’s hands his fiery seed fire to Agni, who can handle it till the radiance becomes Shiva’s offspring. Kartikeya is also known as Shanmukha or God with six faces. When even Ganga couldn’t bear the heat, She deposited the fireball into a lake in a forest of reeds. So, He handed over the ball to Goddess Ganga. But even Agni couldn’t bear the heat of the energy of Shiva and Parvati. In the meantime, the other Gods being insecure from Tarakasura, sent Agni, or the God of fire, to get hold of the ball of fire. As they both meditated, a ball of fire emerged out of their cosmic energies. Lord Shiva took her to a cave and asked her to meditate. However, Shiva was not a God who could let injustice prevail. Tarakasura knew that Lord Shiva was an ascetic, and he thought he would not marry or have children. However, it is believed that Lord Murugan manifested for the sole purpose of killing Tarakasura. Hence, he would not have a son without a wife. This is soon after Sati’s death, so Tarakasura takes it for granted that Shiva was sad and depressed and would not get remarried.
Son of Lord Shiva would only be as strong as Lord Shiva. One Asura named Tarakasura, who Lord Brahma gave a boon that he would only be killed by someone as strong as Lord Shiva.