Mahabharata 12.136.203

तस्मादभीतवद्भीतो विश्वस्तवदविश्वसन्कार्याणां गुरुतां बुद्ध्वा नानृतं किंचिदाचरेत्

tasmādabhītavadbhīto viśvastavadaviśvasankāryāṇāṃ gurutāṃ buddhvā nānṛtaṃ kiṃcidācaret

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