CC Antya 6.162
ācārya-ājñāte māne — caitanya ‘prāṇa-dhana’
Yadunandana Ācārya had been officially initiated by Advaita Ācārya. Thus he considered Lord Caitanya his life and soul.
Śrīla Bhaktisiddhānta Sarasvatī Ṭhākura comments that although the atheists who have deviated from the order of Śrī Advaita Ācārya introduce themselves as followers of Advaita Ācārya, they do not accept Śrī Caitanya Mahāprabhu as the Supreme Personality of Godhead, Kṛṣṇa. Yadunandana Ācārya, one of the most confidential followers of Śrī Caitanya Mahāprabhu, was the initiated disciple of Advaita Ācārya. He was not polluted by sentimental distinctions classifying Vaiṣṇavas according to birth. Therefore, although Vāsudeva Datta had not been born in a brāhmaṇa family, Yadunandana Ācārya also accepted him as his spiritual master.