Today is 'Vamana Jayanti' which is celebrated on the Dwadashi date of Bhadrapad Shukla Paksha every year. With this it is believed that on this day Lord Vishnu took the fifth incarnation as Vamana. So let us tell you today the story related to them which should be heard or read today.
Vamana Katha - In the subject of Vamnavatara, there is a story in Sri Madbhagavadpurana, according to which once the demons were defeated in the and they went towards Asthachal with the dead demons. The demon king Bali dies from Indra Vajra. Then the demon Guru Shukracharya sacrificed his dead Sanjeevani Vidya and makes other demons alive and healthy. Shukracharya conducts a yagna for the king's sacrifice and by fire receives divine arrows and impenetrable armor and the Asura army invades Amravati. Seeing the Asura army coming, Devraj Indra understands that this time he will not be able to face the Asuras and hence the gods run away.
Then Shukracharya organizes a hundred Ashwamedh Yagya for the immovable kingdom on King Bali's Amravati. Indra has knowledge of the desire of King Bali that no one can expel him from heaven after completion of hundred sacrifices of King Bali. Therefore Indra goes to Lord Vishnu's shelter and Lord Vishnu assures Indra to help him. Then Lord Vishnu promises to be born in Vamana form from Aditi's womb. Here, at the behest of Kashyap ji, Mata Aditi performs the ritual of payowrat which is for getting a son. Then on the day of Shukla Paksha of Bhadrapada month, the Lord appears from the womb of Mother Aditi and incarnates and takes the form of Brahmachari Brahmin.
Maharishi Kashyapa performs his Upanayana rites with sages. Vamana Batuk was given Maharishi Pulak Yajnopavit, Agastya gave Mrigacharm, Marichi gave Palashdand, Surya gave Chhatra, Bhrigu Khadau, Saraswati gave Rudraksha Mala and Kubera gave alms. After that, Lord Vamana goes to the sacrifice with the permission of the father. At that time, King Bali is performing a final yagna on the north bank of Narmada River. Vamana Avatari approaches Shri Vishnu King Bali. King Bali looks at Vaman and asks, "Who are you?" Then Vaman answers that "We are Brahmins." Bali then asks, "Where are you living?" "The whole universe is our abode." Vamana answers. Hearing this, King Bali thought that just as everyone lives in the world, so does this Brahmin. Then Bali asks - "Who is your Nath?" "We all have our Nath, we don't have any Nath." Vamana answers. The king thinks that his parents etc. may have died. Then the king again asks - 'Who is your father? "Vamana replies that' we do not remember the father, that is, we have no father, we are the father of all." Bali asks "What do you want from me?"
Vamana asks three steps on earth. Bali is surprised that Vamana's three steps are very small. They say this is very little. Vamana says that with this we feel the three worlds, that is, we will measure the triloki in three steps. Sacrifice Guru Shukracharya prevents the sacrifice, but still does not accept the sacrifice. Vamana measures all people in one step and the whole earth in another, now there is no place to keep the third step. Sacrifice takes place in front of Bali, how do they keep their word? Then they turn their head forward. God does exactly that and God does exactly that, and orders the sacrifice to remain in the sutal lok. The Bali gladly obey God's command.