Sri Avadhuta Gita is from the Nondualistic (Advaita) Vedanta by Dattatreya Avadhuta.
In Sri Avadhuta Gita in English rhyme, the Self has been dealt in detail and explained with regards to True knowledge as per Sanatan Dharma (Hinduism).
True knowledge not found in things surely,
And bliss but lost in all the goods worldly,
The true wisdom and liberation attained be,
By attaining the knowledge of Self in reality