The texts refer to Sai as the 'Lord of Yoga.' Based on the source, can you explain what kind of yoga this refers to and what his ultimate goal was?

The texts describe Sai as the "Lord of Yoga" who appeared on the Godavari for the world's upliftment. His practice was not about physical postures but about achieving a profound state of oneness and self-realization. As detailed in Chapter 4, his yoga involved discarding the feeling of duality and realizing that everything, both moving and unmoving, is Brahman by nature. His ultimate aim was the attainment of the Supreme, and his mind was constantly colored with the form of the Self, showing no attachment to perishable, worldly things. This state of non-duality is described as the pinnacle of happiness and supreme devotion.