Mahabharata 12.211.29

प्रेत्य भूतात्ययश्चैव देवताभ्युपयाचनम्मृते कर्मनिवृत्तिश्च प्रमाणमिति निश्चयः

pretya bhūtātyayaścaiva devatābhyupayācanammṛte karmanivṛttiśca pramāṇamiti niścayaḥ

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