Happy Raksha Bandhan:

The festival of Raksha Bandhan is celebrated on the full moon date of Shravan month. In this year Raksha Bandhan is celebrated on 22 August 2021. It is considered a festival of brothers and sisters.

In northern India, this festival is dedicated to the unwavering love of brothers and sisters. On this day, Sisters ties a rakhi on her brother's wrist and the brothers take a pledge to protect their sisters and show their affection.

History of Raksha Bandhan (Lakshmi ji tied rakhi to King Bali) -

King Bali was a great king and was also an ardent devotee of Lord Vishnu. Once he performed a yajna.

King Bali sacrificed his right to heaven by performing a yajna. Fearing the austerity of sacrifice, Devraj Indra prayed to Lord Vishnu. Lord Vishnu brought Vamnavatar and asked King Bali in charity to give him three steps of land. Even after Guru Shukracharya's refusal, Bali did not give up his resolve and donated three steps of land.
He measured the entire earth and sky in two steps. At this, King Bali understood that God was testing him. For the third step he got the Lord's foot placed on his head.

Then he pleaded with the Lord "'Lord! Now everything is gone for me, you accept my request and stay with me in the Hades. The Lord obeyed the devotee and left Baikuntha and went to Hades."

Laxmiji became worried with this. On Narada's request, Lakshmiji came in front of King Bali as a poor woman and tied a rakhi to King Bali. Bali said that I have nothing to give you, on this Goddess Lakshmi came in her form and said that you have a real God, I want that I have come to take them. On this, Bali, while playing the religion of Rakshasutra, handed over Lord Vishnu to Mother Lakshmi. Thus lakshmi ji brought Vishnu with him by sacrifice. Goddess Lakshmi freed Lord Vishnu by tying a rakhi to her brother Bali. From this day onwards Rakhi became a festival of siblings.