Valmiki Ramayana 7.15.24
पापस्य हि फलं दुःखं तद्भोक्तव्यमिहात्मना ।तस्मादात्मापघातार्थं मूढः पापं करिष्यति॥
pāpasya hi phalaṃ duḥkhaṃ tadbhoktavyamihātmanā |tasmādātmāpaghātārthaṃ mūḍhaḥ pāpaṃ kariṣyati ||
Our plain-language meaning of this verse is waiting for scholar review.
Open in the book