Chatuhsan

Kumaras (Sanaka, Sanandana, Sanatan, and Sanat) lit. ‘young boys’; the first four sons of Brahma, who serve the Lord eternally in the forms of young celibate brahman boys although internally they are vastly learned sages whose teachings appear throughout the scriptures. They are also known as Chatuhsan.

— books Sri Navadvipa-dhama-mahatmya / Glossary