This is a brief sub-gloss. For a fuller reading of this verse, see Madhusūdana, Śaṅkara, or Rāmānuja above.
Action that is enjoined and obligatory, free of attachment, done without longing, done without being prompted by attachment or aversion, done by a doer who does not crave its fruit, is called of sattva.
Contemporary English rendering of the Sanskrit bhāṣya, pending scholar review.