The proposals submitted by King Indra were immediately accepted by Bali Mahārāja and his assistants, headed by Śambara and Ariṣṭanemi, and by all the other residents of Tripura.
Srimad Bhagavata Purana
श्रीमद्भागवतमहापुराणम्
मूल श्लोकः
तदरोचत दैत्यस्य तत्रान्ये येऽसुराधिपाः । शम्बरोऽरिष्टनेमिश्च ये च त्रिपुरवासिनः
tadarocata daityasya tatrānye ye'surādhipāḥ | śambaro'riṣṭanemiśca ye ca tripuravāsinaḥ
SB 8.6.31