Fetching details from the dictionary...
nirvana; supreme enlightenment
death; death of Buddha
釈迦は涅槃に入り煩悩から解脱した。
The Buddha entered nirvana and was freed from worldly desires.
涅槃図が寺院の壁に描かれていた。
A depiction of nirvana was painted on the temple wall.
涅槃の境地に至ることが修行の目的だ。
Reaching the state of nirvana is the purpose of ascetic practice.