The Atman is Not Sattva Guna YS III - 35, 36

Yoga Sutra III- 35- HRDAYE CITTA SAMVIT - By samyama on the heart, the knowledge of the mind-stuff is obtained.

Yoga Sutra III - 36 - SATTVA PURUSAYOR ATYANTASAMKIRNAYOH PRATYAYAVISESO BHOGAH PARARTHAT SVARTHASAMYAMAT PURUSA JNANAM - The intellect and the Purusha (or Atman) are totally different, the intellect existing for the sake of the Purusha, while the Purusha exists for its own sake. Not distinguishing this is the cause of all experiences; and by samyama on the distinction, knowledge of the Purusha is gained.

Swami Satchidananda translated the above sutras without commentary.

For the above sutras there is only a commentary on Yoga Sutra III- 36 from "How to Know God - The Yoga Aphorisms of Patanjali" translated and commented on by Swami Prabhavananda and Christopher Isherwood. - "In the ordinary state of consciousness, the highest enjoyment we can know is the joy inspired by the guna of sattwa. This seems to us, in our ignorance, to be identical with the joy of the pure Atman; but it is not. Sattwa, even in its purest state, is still a guna; and sattwic joy still contains a measure of egotism. What we have to understand is that the gunas are only agents of the Atman, and that sattwic joy is only a pale reflection of the joy of the Atman, which is without egotism and entirely independent of the gunas. By making this samyama and discriminating between Atman and sattwa, the yogi passes beyond earthly enjoyment into the joy of the Atman itself."

See related posts:

• The Four Stages of the Gunas YS II - 19
• The Seen - Nature of the Gunas YS II - 18