The message in the vision was to convey to Buddha that he should not torture his body to starvation in quest of the Truth of Life. It is illustrated by the beautiful example of the sitar. The vision said that the sitar had to be tuned low nor high. If the string of a sitar is overstretched, it will break and lose its ability to make music. Similarly, an overslack string too would not create music. In other words, we should not go to extremes in our efforts to achieve our goals.