When you attain the unattainable, you attain Mahamudra.

When branches and leaves grow from a tree,

If you sever the single trunk, the millions of branches wither.

Likewise, if you cut the root of mind, the leaves of samsara wither.

Even if darkness has collected for a thousand aeons,

A single lamp dispels the gathered darkness.

Likewise, your luminous mind instantly dispels

The ignorance, misdeeds, and obscurations accumulated over aeons.

-- Tilopa