Mahabharata 12.289.54

सुस्थेयं क्षुरधारासु निशितासु महीपतेधारणासु तु योगस्य दुःस्थेयमकृतात्मभिः

sustheyaṃ kṣuradhārāsu niśitāsu mahīpatedhāraṇāsu tu yogasya duḥstheyamakṛtātmabhiḥ

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