How you judge others can become a subtle body against you, building saṃsāra.
Your compassion towards others will be a subtle body in your favor, building virtue.
Mahamudra nonetheless clings not to one or the other, but clings rather to a permanent devotion in the seeking, or production of light. This is of course a proactive task of awareness rather than a goal to reach. It contains an immeasurable amount of energy and some kind of magic that is hard to explain.
In the words of the mystical Russian writer Ouspensky:
Buddhists must have magic, the existence of which they do not acknowledge, and the possibility of which is denied in official Buddhism.