Srimad-Bhagavatam: Canto 10 - Chapter 1 - Verse 17
अक्रूर उवाचभो भो वैचित्रवीर्य त्वं कुरूणां कीर्तिवर्धन ।भ्रातर्युपरते पाण्डावधुनासनमास्थित: ॥ १७ ॥
akrūra uvācabho bho vaicitravīrya tvaṁkurūṇāṁ kīrti-vardhanabhrātary uparate pāṇḍāvadhunāsanam āsthitaḥ
Akrūra said: O my dear son of Vicitravīrya, O enhancer of the Kurus’ glory, your brother Pāṇḍu having passed away, you have now assumed the royal throne.
Akrūra was speaking ironically, since the young sons of Pāṇḍu should actually have been occupying the throne. Upon the death of Pāṇḍu, they were too young to immediately govern and so were put in Dhṛtarāṣṭra’s care, but now sufficient time had passed, and their legitimate rights should have been recognized.