Ṭhākura Haridāsa: he is born in Muhammadan family, and Caitanya Mahāprabhu gave him the place nāmācārya. He became the ācārya of preaching. The Caitanya Mahāprabhu's whole mission was entrusted to him. Caitanya Mahāprabhu, He appeared for preaching the importance of chanting Hare Kṛṣṇa, and practically He entrusted the business to Haridāsa Ṭhākura, who was by his birth a Muhammadan.
There are many others. Many others. Just like Prahlāda Mahārāja. He is born of a demon father. He is also ācārya. Amongst the twelve recognized ācārya of Bhāgavata are Sambhu . . . Nārada, Śambhu, Kumāra, Kapila, Manu, Prahlāda. There are twelve recognized ācāryas of the Bhāgavata school, and Prahlāda Mahārāja is one of them, this Prahlāda Mahārāja. Because he is born of a demon father, a demonic father . . . they are . . . they can do anything. They are even flesh-eaters. They are everything.
Demons means flesh-eaters. They are doing even, I mean to say drunkards, gamblers, women-hunters. These are the qualifications of the demons. Because demons means materialistic. That's all.