Buddha said, “if you wish to know the Buddha-nature’s meaning, you must contemplate temporal conditions. If the time arrives, the Buddha-nature will manifest itself. From Bussho, Shobogenzo, Waddell and Abe translation.
This is it for me! No more seeking. (thank god, after 40 years I’m so tired of seeking) (Joshu calls us, “Buddha seeking fools”) No more intellectualizing on the meaning of Zen or the sutras or thinking we can understand. No more seeking deep and poo-pooing surface (ordinary things). No more wishing for sacredness and transcendence, which discounts our ordinary delusions and the problems of life. This dualistic thinking, separating the absolute and the relative, with our concurrent preferences, just continues all the worldly suffering, confusion and fatigue. Wishing things were otherwise.
The absolute and the relative, the sacred and the ordinary, are completely intertwined and completely arise together. That means that this moment is complete, is the Buddha-nature. There is no “other” “thing” to search for. So our practice should be directed at seeing the inter-related quality, the process of no-solid-objects including me!, the openness and no-story (and the taking care of the story) of what is actually arising, the temporal condition of this moment. We must ONLY contemplate the temporal condition of this moment, and then the next. This moment is the nexus of process that brings forth this object and brings forth Buddha-nature. There is no exception and no abandonment. We can experience this when we release our concepts of truth and our preferences.
If the nexus of forces that arrive are in alignment, we can see "no form" with integrity and "form" with integrity.
We can also experience that they are not separated but whatever the object of our awareness is, This itself is the arrival of Buddha-nature. “If the time arrives, the buddha nature will manifest itself.
From Fukanzazengi: :The treasure store will open of itself, and we will use it at will”