Rajasuya is a very old and important ritual or ceremony that was done in ancient India. It was done by kings who wanted to show off their power and wealth, and also to gain the respect of other kings.
During the ceremony, the king would invite other important people, like priests and other kings, to come to his kingdom. The king would welcome them with lots of food and gifts, and everyone would come together to celebrate.
The most important part of the ceremony was when the king would be crowned with a special jewel called a ratna. This was a crown that showed everyone that the king was very powerful and important.
There were also special rituals done during the ceremony that would bless the king and bring him good luck. These rituals involved things like pouring holy water on the king's head and singing special hymns.
Overall, rajasuya was a very big deal in ancient India. It was a way for kings to show off their power and wealth, gain the respect of others, and receive blessings to bring them good luck.