Yoga Sutra 3.20 not the field of the samyama
Sūtra III.20
But not the subject of those ideas, because that was not the field of the saṃyama
He knows the idea which has been entertained. He does not know in what sort of subjective state that has been entertained, because that was not the only subject of the yogin’s concentration. It was only the idea that was the subject of the concentration by the yogin’s mind.
(Answer) But not the subject of those ideas, because that was not the field of the saṃyama. He the yogin knows the idea which has been entertained. He does not know in what sort of subjective state that idea has been entertained by the other person. He does not know in what subjective state the other person’s idea is held, whether it is happiness or suffering, so that he himself might become an enjoyer or a sufferer.
(Opponent) But if he does not know the subject, how would he know that the idea has been entertained there at all?
(Answer) He knows the general fact that it is entertained there, but not that it is entertained as something enjoyable, creating the subjective feeling of being an enjoyer. It was only the idea that was the subject of the concentration by the yogin’s mind.