กูฏสูตร
TIPITAKA Volume 19 : PALI ROMAN Sutta Pitaka Vol 11 : Sutta. Saṃ. Ma.
[401] Seyyathāpi bhikkhave kūṭāgārassa yā kāci gopānasiyo sabbā tā kūṭaninnā kūṭapoṇā kūṭapabbhārā evameva kho bhikkhave bhikkhu satta bojjhaṅge bhāvento satta bojjhaṅge bahulīkaronto nibbānaninno hoti nibbānapoṇo nibbānapabbhāro.