According to the reference found in Kautilya's Economics about various productions and exports from Nepal, during the time of Chandra Gupta Mouriya, in the fourth century, Nepal was known for quality rainproof woolen blanket woolen blankets. The blankets were made of eight pieces joined together of black color known as "bhiringisi" as well as "apasaraka".
The passage describes the production and export of woolen blankets from Nepal during the reign of Chandra Gupta Maurya, highlighting their quality and specific construction ("eight pieces joined together", "bhiringisi" and "apasaraka").