Can you summarize the primary themes and prayers presented in Chapter 50?

Chapter 50 of the Shri Sai Satcharitra serves as a powerful concluding chapter filled with devotion and philosophical insights. It begins with invocations and expresses gratitude for a healthy human birth. The chapter then elevates the Sadguru above all worldly relations, describing him as a spiritual progenitor who ends the cycle of birth and death. As detailed in this chapter, it emphasizes the importance of 'Satsang,' or the company of saints, for attaining peace and discrimination. Finally, it concludes with a profound prayer, stating a preference for 'steady devotion to Sai' over the traditional four types of liberation, asserting that devotion alone is the supreme attainment that purifies the heart.