Mahabharata 12.258.18

तस्मात्पितुर्वचः कार्यं न विचार्यं कथंचनपातकान्यपि पूयन्ते पितुर्वचनकारिणः

tasmātpiturvacaḥ kāryaṃ na vicāryaṃ kathaṃcanapātakānyapi pūyante piturvacanakāriṇaḥ

Our plain-language meaning of this verse is waiting for scholar review.