Based on Chapter 49, what is considered the highest form of spiritual practice for a follower of Sai?

Chapter 49 of the Sai Satcharitra places the meditation on one's Guru as the supreme spiritual practice. The text makes a direct comparison, stating that while penance is greater than pilgrimages, vows, and charity, and singing Hari's name is greater still, "the meditation on one's own Guru is the greatest of all." For followers of Sai Baba, this is made even more specific. The chapter affirms that "Sai alone is the object of meditation for His devotees; Sai alone is their worship of deities." This clearly indicates that focused, loving meditation on the Sadguru is presented as the ultimate and most valuable spiritual endeavor.