Mahabharata 5.140.10

यदा द्रक्ष्यसि संग्रामे भीमसेनं महाबलम्दुःशासनस्य रुधिरं पीत्वा नृत्यन्तमाहवे

yadā drakṣyasi saṃgrāme bhīmasenaṃ mahābalamduḥśāsanasya rudhiraṃ pītvā nṛtyantamāhave

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