“Ultimately the aim of varnashrama-dharma is to turn a crude man into a pure devotee of the Lord, or a Vaishnava. Anyone, therefore, who becomes a Vaishnava accepted by the first-class Vaishnava, or uttama-adhikari Vaishnava, is already considered a brahmana, regardless of his birth or past deeds. Shri Chaitanya Mahaprabhu accepted this principle and recognized Shrila Haridasa Thakura as the acharya of the holy name, although Thakura Haridasa appeared in a Mohammedan family.” (Shrila Prabhupada, Shrimad Bhagavatam, 1.2.2 Purport)