Mahabharata 4.64.36
मन्त्रयित्वा तु कौन्तेय उत्तरेण रहस्तदाइतिकर्तव्यतां सर्वां राजन्यथ युधिष्ठिरे
mantrayitvā tu kaunteya uttareṇa rahastadāitikartavyatāṃ sarvāṃ rājanyatha yudhiṣṭhire
Our plain-language meaning of this verse is waiting for scholar review.