The antariya was a garment worn by people during the Mauryan period. It was:

The antariya was a fundamental lower garment in ancient India, including the Mauryan period. It consisted of an unstitched length of white cotton or linen draped around the hips and passed between the legs. This garment was worn by both men and women, typically wrapped around the waist and resembling a skirt or dhoti. Historical evidence from the Vedic period through the Mauryan era shows that traditional Indian attire primarily consisted of unstitched cloths tied or wrapped around the body in various styles [1]. The antariya was often secured with a sash called a kayabandh and was part of a three-piece ensemble known as sattika, which also included the uttariya (upper garment) and stanapatta (chest band). It eventually evolved into the modern dhoti and regional variants like the lungi.

Sources

1. [1] https://en.wikipedia.org/wiki/History_of_clothing_in_the_Indian_subcontinent