Mahabharata 8.6.6

कृत्वावहारं सैन्यानां प्रविश्य शिबिरं स्वकम्कुरवोऽऽत्महितं मन्त्रं मन्त्रयां चक्रिरे तदा

kṛtvāvahāraṃ sainyānāṃ praviśya śibiraṃ svakamkuravo''tmahitaṃ mantraṃ mantrayāṃ cakrire tadā

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