Patanjali had designed and caste the Science Of Yoga about 2400 years ago (i.e. 400 year BC) in the form of Yoga Sutras, he had explained AUM in Sanskrit verses (sutras).

Patanjali had explained the definition of God and he explains in the sutra that "AUM represents God".He further explains that you can go nearer to God by repeatedly chanting it . The relation between the name and the form is a subject of research and is the subject of great discussions in philosophy and all its branches including spiritual, philosophical.

In yogic practices the relation is of immediate and practical value. Patanjali could see that the relation between a form and the name is closest in AUM and has made use of this quality in his method of meditation.