How does the text reconcile the formless, non-dual Brahman with the worship of Sai, a being with form?

The text explains this philosophical concept by stating that the original, formless one, who is beyond qualities and is pure Brahman-consciousness, takes on a form for the welfare of devotees. This manifestation with form is identified as "this Sai of pure qualities." As described in Chapter 1, this being is "unique from the philosophical viewpoint, but stays separate for the joy of devotion, performing the divine plays of God and devotee." The idea is that the ultimate reality is non-dual oneness, but out of love, as the Shruti says 'Let me be many', it creates a seeming duality to allow for the blissful experience of devotion between the worshipper and the worshipped, who eventually merge back into oneness.