The Long Āgama Sūtra 14.44

14.44

佛告帝釋：「捨心有三：一者喜身，二者憂身，三者捨身。帝釋！彼喜身者，自害、害他，亦二俱害；捨此喜已，如所喜，不自害、害他，二俱不害，知時比丘專念不忘，即名受具足戒。帝釋！彼憂身者，自害、害彼，亦二俱害；捨此憂已，如所憂，不自害、害他，二俱不害，知時比丘專念不忘，即名受具足戒。復次，帝釋！彼捨身者，自害、害他，亦二俱害；捨此身已，如所捨，不自害、不害他，二俱不害，知時比丘專念不忘，是即名為受具足戒。」

The Buddha addressed Lord Śakra, “There are three kinds of detachment. One is the body of joy, second is the body of sorrow, and third is the body of equanimity. Lord Śakra, that body of joy harms oneself, harms others, and harms both oneself and others. After becoming detached from this joy, such joy as that doesn’t harm oneself, doesn’t harm others, and doesn’t harm both oneself and others. When he knows this, the monk focuses his attention and doesn’t lose it. That’s called accepting the complete precepts.

“Lord Śakra, that body of sorrow harms oneself, harms others, and harms both oneself and others. After becoming detached from this sorrow, such sorrow as that doesn’t harm oneself, doesn’t harm others, and doesn’t harm oneself and others. When he knows this, the monk focuses his attention and doesn’t lose it. That’s called accepting the complete precepts.

“Furthermore, Lord Śakra, that body of equanimity harms oneself, harms others, and harms both oneself and others. After becoming detached from this equanimity, such equanimity as that doesn’t harm oneself, doesn’t harm others, and doesn’t harm both oneself and others. When he knows this, the monk focuses his attention and doesn’t lose it. That’s called accepting the complete precepts.”