This is a mythological tale about the birth of Lord Ganesha. Lord Ganesha is the son of goddess Parvati and Lord Shiva.One day Goddess Parvati was going for a bath. As she didn’t want to be disturbed, she told Nandi (Lord Shiva’s Bull) to guard the door and asked him not to allow anyone to come inside the house.
Nandi said ok, and stood at the door. But when lord Shiva came home, Nandi didn’t stop him to go inside, as he was very loyal to lord Shiva.
Parvati was very angry and upset to the fact that she had no one as loyal as Nandi was to Shiva.
So she created Ganesha idol from the turmeric paste (used for bathing) and gave life to the idol using her powers and declared him as her son.
Next day when Parvati was going to take bath, she asked his son Ganesha to guard the door and let no one come inside. Ganesha took his duty and stood at the door.
When Lord Shiva came home, Ganesha said that his mother is taking bath and no one is allowed to go inside the house.
Lord Shiva was unaware about the existence of Ganesha. He got furious that an unknown boy is telling him that he could not enter his own house.
Furious Shiva asked his armed man to destroy the boy, but they all failed in front of powerful Ganesha.
Seeing this Lord Shiva decided to fight with Ganesha. During the fight, Lord Shiva severed the Ganesha head, and killed him instantly.
Goddess Parvati got very furious when she came to know about the fight between his son Ganesha and Lord Shiva.
She asked Lord Shiva to give her son back. Lord Shiva’s anger was cooled down by this time and he realised his mistake, but he was unable to join the same head to the Ganesha’s body.
So he went in search for a head. But he could not find any suitable head.
At last he found an elephant sleeping opposite to his mother elephant in different direction.
Lord Shiva took the elephant head and placed it over the Ganesha’s body and gave life to him.
And he declared Ganesha as his son and gave him the status of foremost among all the gods.