Saṃyukta Āgama (291) Part 5

(5) Original text:如是沙门婆罗门。于世间可念之色。观察如病如痈。如刺如杀。无常苦空非我。乃至解脱生老病死忧悲恼苦。是故阿难。于此法如是见。如是闻。如是觉。如是知。于过去未来亦如此道。如是观察。是故阿难。于此法如是见。如是闻。如是觉。如是知。于过去未来亦如此道。如是观察。佛说此经已。诸比丘闻佛所说。欢喜奉行。

Explanation: Thus, śramaṇas and brāhmaṇas, with regard to desirable and lovely forms in the world, contemplate them as if they were an illness, as if they were an abscess, as if they were a thorn, as if they were a killer, contemplating their impermanent, suffering, empty, and not-self nature; in this way they will become far removed from craving and attachment, and will be liberated from birth, aging, sickness, death, sorrow, grief, suffering, and distress. Therefore, Ānanda, with regard to this dharma of inner contact, one should see it thus, hear it thus, be aware of it thus, and know it thus; likewise, one should treat the inner contact of the past and the future in this way, contemplating it thus. Through contemplating again and again, one finally realizes that all dharmas are impermanent, suffering, empty, and not-self; then one no longer craves and grasps, and birth, aging, sickness, death, sorrow, grief, suffering, and distress cease, and the mind attains liberation, coolness, and tranquility.