How does Sai's teaching suggest one can overcome the fear of death through the Guru?

According to Chapter 37, death is described as the great fear of worldly existence. To become fearless, the primary method is to hold firmly to the Guru's pair of feet. The text explains that the Guru will then grant the non-dual intellect, which is key to eliminating this fear. By surrendering one's body, speech, mind, and life-breaths entirely to the Satguru, all worry about the world is removed. When one achieves this level of surrender, the text asks, "what talk is there of the fear of worldly existence?"