The core of this section is this:
The Blessed One then said this: There are three kinds of will-body, Mahāmati. What are the three? They are: (1) the will-body obtained in the enjoyment of the Samādhi; (2) the will-body obtained by recognising the self-nature of the Dharma; and (3) the will-body which is assumed [by a Bodhisattva according to] the class of beings [to be saved] and which perfects and achieves [without a thought of its own achievement]. By realising the higher stages successively after the first is attained, the Yogin will experience them [all].
In going through this I am struck by how closely Zen practice is framed from this, despite how it might appear in the West. It might also be considered a "guide" to the practitioner insofar as it would highlight to the practitioner that "this" is how you might be experiencing your practice. In particular...
What is the will-body obtained by recognising the self-nature of the Dharma? When [the Yogin] of the the eighth stage has a thoroughgoing penetration into the nature of things which is like Māyā and not image-producing, he experiences a revulsion at the seat of consciousness and obtains the Samādhi known as Māyā-like and other Samādhis..
When [the Yogin] is thoroughly conversant with all the characteristics of self-realisation and its bliss which pervades the teachings of the Buddha, he is said to have the body which is will-made, born with [the class], perfecting and achieving..
This is the direction in which to be going.