Cut down the lower tendon of the tongue, (frenulum linguae) and move the tongue constantly: rub it with fresh butter, and draw it out (to lengthen it) with an irron instrument.

N.B. – This is the prelliminary to Khechari Mudra. Its object is co to lengthem the tongue, that when drawn out it may touch with tip the space between the eye-brows. This can be done by outting away the lower tendon. It takes about three years to out away the whole tendon. I saw my Guru doing itz in this wise. On every Monday he used to out the tendon one-twelfth of an inch deep and sprinkle salt over it, so that the cut portions might not join together. Then rubbing the tongue with butter he used to pull it out. Peculiar iron instruments are employed for this purpose; the painful process is repeated every week till the tongue can be stretched out to the requisite length.