A Bao A Qu

In the Book of Imaginary Beings (1967), Jorge Luis Borges retold a Malay tale about the staircase leading to the terrace of a tower in Chitor:
On the stairway of the Tower of Victory there has lived since the beginning of time a being sensitive to the many shades of the human soul and known as the A Bao A Qu. It lies dormant for the most part on the first step, until at the approach of a person some secret life is touched off in it, and deep within the creature an inner light begins to glow. At the same time, its body and almost translucent skin begin to stir. But only when someone starts up the spiralling stairs, is the A Bao A Qu brought to consciousness, and then it sticks close to the visitor's heels, keeping to the outside of the turning steps, where they are most worn by the generations of pilgrims. At each level the creature's colour becomes more intense, its shape approaches perfection, and the bluish form it gives off is more brilliant. But it achieves its ultimate form only at the topmost step, when the climber is a person who has attained Nirvana and whose acts cast no shadows. Otherwise, the A Bao A Qu hangs back before reaching the top, as if paralysed, its body incomplete, its blue growing paler, and its glow hesitant. The creature suffers when it cannot come to completion, and its moan is a barely audible sound, something like the rustling of silk. Its span of life is brief, since as soon as the traveller climbs down, the A Bao A Qu wheels and tumbles to the first steps, where, worn out and almost shapeless it waits for the next visitor. People say that its tentacles are visible only when it reaches the middle of the staircase. It is also said that it can see with its whole body and that to the touch it is like a skin of a peach.
In the course of centuries, the A Bao A Qu has reached the terrace only once.