It doesn't exist, even the victorious ones haven't seen it.
It is not nonexistent because it is the basis of all samsara and nirvana.
This is not a contradiction because this is the unity of the middle way.
May we realize the true nature of mind, which is free from all limitations and extremes.
An aspirational Prayer for Mahamudra
Rangjung Dorge, the Third Karmapa