The Mumonkan, Case 20:

Zen Master Sung-yuan asked, “Why can’t the person of great strength lift up a leg?”

Again he said, “It is not with the tongue that you speak.”

Sung-yuan is said to have tested his students with a third question, “Why has the man of great strength not cut the red thread of passion?” Sung-yuan never found a student who could answer his three questions to his satisfaction, and at his death he put his robe away without naming a Dharma successor.

The "person of great strength" is an enlightened individual, and an enlightened individual does not conceive of a thing separate from the self called a "leg" that could be lifted up or put back down. That person could stand up or sit back down, could walk, or even do the Riverdance if he of she wanted to, but to lift a leg requires there to be some individual entity called "a leg" that could be lifted, and some other thing called a "self" that wanted that "leg" lifted in the first place. Without regard for any individual components or separate things, the enlightened one gets up, gets down, and walks around, but does not consider "the leg" as something apart from the self.

Nor, for that matter, does speaking involve some separate entity known as "the tongue." And as for entanglement in the red thread, the person of great strength does not consider passions or emotion as something apart from the self, something not befitting an enlightened one, either. In fact, to the enlightened one, that person of great strength, there is no separation of self and other, no separation between anything at all. Complete intimacy, including intimacy with intimacy.

We do not "possess" emotions or passions or desires not befitting our Buddha-nature. All those things are Buddha-nature itself. Zen Master Ikkyu understood this and the 18th Century Zen poet Ryokan understood this, and that is why, even in his enlightened state, Ryokan was able to express his desire and longing for his beloved with the words:

Have you forgotten the way to my hut?

Every night, I listen for your footsteps

But you do not arrive.