59. In this parable heaven means the original human nature. Man by nature is the servant of none else but Allah and inherently accepts the doctrine of Tauhid. That is why the one who follows the guidance of the Prophets becomes firm in these dictates of his nature and soars higher and higher. On the other hand, the one who rejects Allah or associates a partner with Him falls down from the heaven of his nature. Then he either becomes a victim of satans and evil leaders like the birds of the parable, which snatch away the fallen man, or he becomes a slave of his lusts, passions, whims, etc., which have been likened to the wind in the parable. They lower him down from one wrong position to the other till he falls into the deepest abyss of degradation.