This may sound ridiculous but the chanting to invole ghurni is nothing but a line from a funny Bengali poem author is Sukumar roy, he is deemed king of modern Indian limerick and the line is a part of a famous 4 liner :
Halde,sabuj , orang Otan, it patkel chitpatang/muskil asah uremali,dharmtalar karma khali
I am now dead sure there is a Bengali involved as creative director/scriptwriter some how, concepts are totally loaned from popular Bengali literature. First tashinds concept from tagore and now this, I can't wait to watch more of bong connection