Mahabharata 8.9.6

भीमसेनस्तथा द्रौणिं कुर्वाणं कर्म दुष्करम्विन्दानुविन्दौ कैकेयौ सात्यकिः समवारयत्

bhīmasenastathā drauṇiṃ kurvāṇaṃ karma duṣkaramvindānuvindau kaikeyau sātyakiḥ samavārayat

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