What is the hierarchy of spiritual practices mentioned in the text, and which practice is considered the most supreme?

The text from Chapter 49 outlines a clear hierarchy of spiritual endeavors. It states that penance is considered greater than traditional practices like pilgrimages, vows, sacrifices, or charity. Moving higher, the singing of Hari's name is deemed even more potent than penance. However, the text explicitly declares that the meditation on one's own Guru is the greatest and most supreme practice of all. For the followers of Sai Baba, this means that Sai alone is the ultimate object of their meditation and worship, their most protected treasure, and the key to breaking the bonds of worldly existence.