首楞嚴義疏注經 5.144

5.144

憍陳那，姓也，此云火器，其先事火，從此命族。五比丘者，初，佛棄國入山修道，淨飯乃命家族三人：一阿濕婆、二跋提、三摩訶男拘利，舅氏二人：一憍陳那、二十力迦葉，勅令隨衛。五人銜命，後各捨去，在鹿園中共修異道。佛得果已，思度何人，此五於我先曾營衛，即往為彼三轉法輪，問言解否？陳那先答已解已知，諸天在空亦言其解，故佛命彼名阿若多。阿若多者，此云解也，或言已知。雞園，精舍名也。

Kauṇḍinya is a clan name, which translates as 'fire-vessel'; his ancestors served fire, and from this the clan was named. As for the 'five monks', at first, when the Buddha abandoned his kingdom, entered the mountains, and practiced the Way, Śuddhodana ordered three relatives of the clan—first, Aśvajit; second, Bhadrika; third, Mahānāma-Kulika—and two maternal uncles—first, Kauṇḍinya; second, Daśabala-Kāśyapa—commanding them to follow and guard him. The five men took the command, but later each abandoned him and practiced heterodox ways together in the Deer Park. After the Buddha attained the fruit, he thought about whom to liberate: these five had previously guarded and served him, so he went and turned the wheel of the Dharma thrice for them, asking, 'Do you understand?' Kauṇḍinya was the first to answer that he had understood and known, and the devas in the sky also said he had understood; therefore the Buddha named him Ājñāta. Ājñāta translates as 'understanding' or 'already known'. Cock's Grove is the name of a monastery.