Nyaya - The lamp placed over the threshold.
Published on 24 July 2017 03:30 AM
गृहार्थमरोपितस्यादपश्येति न्यायः
It takes its origin from a lamp hanging over the threshold of a house, which, by its peculiar position, serves to light both the house and the path leading to it. It is used to denote something which serves a two-fold purpose at the same time.