What are Sai's teachings on heaven, death, and the afterlife? Is striving for heaven the ultimate goal?

According to the teachings in Chapter 37, the concepts of heaven and death are explained in a unique way. Death is described as the state when something that came from the unmanifest returns to the unmanifest. The true 'nooses of death' are unrighteousness, ignorance, anger, and hatred. The text questions the desire for a heaven that is merely a place for sensual enjoyment and lacks the remembrance of God. It suggests that the pleasure found in heaven is no different from worldly pleasure and that it's better to be born on earth, where one can offer actions to God and attain a state of fearlessness, even with a fleeting life.