佛說佛名經 3.11

3.11

"All of you present, let your bodies and minds be tranquil at this very moment, free of flattery and free of obstacles; this is precisely the time to give rise to the good and eliminate the evil. Furthermore, each of you should generate four types of meditative contemplation to serve as preliminary skillful means for the eradication of offenses. What are the four? First, contemplate causes and conditions; second, contemplate karmic retributions; third, contemplate one's own body; fourth, contemplate the Tathāgata's body.