Contemplation: Producing and Extinguishing

After reviewing the guidelines for practice, take this gatha as the object of your contemplation:

Thereupon, the Lord recited the gatha:
"Objects that are produced by causes and conditions,
Those objects are extinguished and unproduced.
Extinguish all objects subject to production and extinction,
And those objects will be produced and unextinguished."

from the Vajrasamadhi Sutra, quoted in Cultivating Original Enlightenment by Robert Buswell, p. 241