Chapter 49 mentions several spiritual practices. Which one does it declare to be the most supreme and why?

Chapter 49 of the Sai Satcharitra establishes a hierarchy of spiritual practices to emphasize the importance of the Guru. It states that penance is considered greater than pilgrimages, vows, sacrifices, or charity. Moving higher, the singing of Hari's name is deemed greater than even penance. However, the chapter unequivocally declares that "the meditation on one's own Guru is the greatest of all." For Sai's followers, this means that Sai himself is the ultimate object of meditation and worship. As the text puts it, Sai alone is their secret treasure, to be protected and cherished above all other spiritual endeavors.