It is a mental status of Mahayana Bosatsu to notice the middle way (in the presence of two contradictory positions, performing practice freely without leaning toward either of them), forget three kinds of karma, and become philosophical about existence in Buddhism as neither existing nor vacuity.
大乗の菩薩が、中道を覚って三業を忘れ、有るでもなし空(仏教)でもなしと達観する境地。