Based on the provided text, how should devotees understand the concept of Sai Baba's 'death'?

The text explains that the 'death' of a saint like Sai Baba is not a true end but an illusion, described as being similar to a defect of vision, like thinking the sun is gone during an eclipse. According to Chapter 43, Sai Baba is the 'complete Supreme Brahman,' for whom birth and death are irrelevant concepts. His physical body was merely an adjunct, and his departure was a voluntary act where he 'burned the body in the fire of Yoga' and 'merged himself into the unmanifest.' Therefore, devotees should understand it not as a perishing, but as a transition into his true, formless state, where he continues to exist and fill the world.