Ājñāta-kauṇḍinya. One of the first five monks 五比丘 who originally practiced asceticism with Śākyamuni, and who heard his first sermon at the Deer Park. Śākyamuni praised him for being the first to have attained the "dharma-eye (法眼)." His actual name was Kaundinya 憍陳如. Ājñāta which means "the first to know" 初知 or simply "known" 已知, was added as an honorific title.

梵語阿若，華言已知，此其名也；梵語憍陳如，華言火器，此其姓也。以其是婆羅門種，由先世事火，故云火器，乃佛之舅氏也。（梵語婆羅門，華言淨行。事火者，法華文句云：火有二義，照也，燒也。照則暗不生，燒則物不生，所以事之因為姓也。）