Mahabharata 12.40.14

उपवेश्य महात्मानं कृष्णां च द्रुपदात्मजाम्जुहाव पावकं धीमान्विधिमन्त्रपुरस्कृतम्

upaveśya mahātmānaṃ kṛṣṇāṃ ca drupadātmajāmjuhāva pāvakaṃ dhīmānvidhimantrapuraskṛtam

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