The word sukra means semen. The sons of Sukracarya were brahmanas by birthright, but an actual brahmana is one who possesses the brahminical qualities. The brahmanas Sanda and Amarka, being seminal sons of Sukracarya, did not actually possess real brahminical qualifications, for they engaged as servants of Hiranyakasipu. An actual brahmana is very much satisfied to see anyone, not to speak of his disciple, become a devotee of Lord Krsna. Such brahmanas are meant to satisfy the supreme master. A brahmana is strictly prohibited from becoming a servant of anyone else, for that is the business of dogs and sudras. A dog must satisfy his master, but a brahmana does not have to satisfy anyone; he is simply meant to satisfy Krsna (anukulyena krsnanusilanam). That is the real qualification of a brahmana. Because Sanda and Amarka were seminal brahmanas and had become servants of such a master as Hiranyakasipu, they unnecessarily wanted to chastise Prahlada Maharaja.