A stool to install idols. The length of this stool should be equal to that of the idol. The breadth should be its half and the thickness equal to that is the breadth. The exact place where the idol is fixed of called मेखला and the hole in the मेखला should slightly slant towards the north. The pipe (exithole for the water to flow out) called प्रणाल should be as wide as a fourth part of the area of the पीठ . For a प्रणाल of a शिव temple the length of the same should be half of that of the पिण्डिका .

The sanctum sanctorum of the temple should be divided into seven divisions and the पिण्डिका should be fixed by a learned priest in the ब्राह्मभाग of the गर्भगृह (sanctum sanctorum). (Chapters 50 and 60, Agni Purāṇa) .