妙法蓮華經玄義 9.36

9.36

七、善修對治者，若正道多障，應須助道，觀生死即涅槃，治報障也；觀煩惱即菩提，治業障煩惱障也。

Seventh, skillfully cultivating antidotes: If the direct path has many obstacles, one must resort to auxiliary paths; contemplating birth and death as identical to nirvāṇa cures retribution obstacles; contemplating afflictions as identical to bodhi cures karmic obstacles and affliction obstacles.