After this, the great religious King, Mahārāja Yudhiṣṭhira, executed the royal power in the kingdom strictly according to the codes of royal principles approved by his uncle and confirmed by Lord Śrī Kṛṣṇa.
Srimad Bhagavata Purana
श्रीमद्भागवतमहापुराणम्
मूल श्लोकः
पित्रा चानुमतो राजा वासुदेवानुमोदितः । चकार राज्यं धर्मेण पितृपैतामहं विभुः
pitrā cānumato rājā vāsudevānumoditaḥ | cakāra rājyaṃ dharmeṇa pitṛpaitāmahaṃ vibhuḥ
SB 1.9.49