The Long Āgama Sūtra 24.20

24.20

佛告長者子：「我不說有數，多有比丘成此三神足者。長者子！我有比丘在此眾中自思念：『此身四大，地、水、火、風，何由永滅？』彼比丘倐趣天道，往至四天王所，問四天王言：『此身四大，地、水、火、風，由何永滅？』

The Buddha told the prominent man’s son, “I wouldn’t say they are numerous, but there are several monks who’ve achieved these three miraculous abilities. Prominent man’s son, there was a monk in this assembly who thought to himself, ‘How are the four elements of this body made to cease forever, which are earth, water, fire, and air?’ That monk instantly headed for the heavenly road. He went to the Heaven of the Four God Kings and asked the four god kings, ‘How are the four elements of this body made to cease forever, which are earth, water, fire, and air?’