TIPITAKA Volume 16 : PALI ROMAN Sutta Pitaka Vol 8 : Sutta. Saṃ. Ni.

[538] Sāvatthiyaṃ viharati ... Dāruṇo bhikkhave lābhasakkārasiloko kaṭuko pharuso antarāyiko anuttarassa yogakkhemassa adhigamāya.