भीष्मपर्व — अध्याय 54: फल्गुन-प्रतिरोधः, सौबली-व्यूह-विध्वंसः, दुर्योधन-भीष्म-संवादः
जघनं पालयामास विराट: सह केकयै:
jaghanaṃ pālayāmāsa virāṭaḥ saha kekayaiḥ
Sañjaya said: Virāṭa, together with the Kekayas, held and guarded the rear of the formation—maintaining order and protection where a sudden attack could cause the greatest confusion.
संजय उवाच
Even in war, duty includes disciplined protection of the vulnerable points of a formation; leadership is shown not only in attack but in safeguarding the rear, preventing disorder and unnecessary loss.
Sañjaya reports battlefield dispositions: Virāṭa, supported by the Kekayas, is assigned to secure the rear of the army formation, ensuring it is defended against flanking or surprise assaults.