Sri Hamas Gita & Sankhya Gita in English rhyme are a part of the ancient Shrimad Bhagwat.
HAMAS GITA - Book 11.06-29 (Chapters 6): Explains the core content of Vedantic philosophy. around the Supreme Brahman and the Supreme Consciousness.
SANKHYA GITA - Book 11.06-29 (Chapters 24): Explains the Sankhya philosophy.