A royal disciple of the anvikshiki
'Anvikshikim alarkaya' (SB 1.3.11).
अलर्क
Alarka is an ancient king (remembered in the Markandeya Purana and allied literature), traditionally taught by Dattatreya. SB 1.3.11: 'anvikshikim alarkaya' — he received the teaching of the anvikshiki. (No suitable Wikipedia article — EN 'Alarka' is a US ship.)
Śrīmad Bhāgavata Mahāpurāṇa 1.3.11 — Sanskrit Wikisource (pinned oldid=369178)
'Anvikshikim alarkaya' (SB 1.3.11).