分別功德論 2.8

2.8

尊弟子者，謂五百羅漢各有所便，或智慧第一，或神足、或辯才、或福德、或守戒、或知足、或說法，各據第一。欲論先兄而後弟者，以阿若拘隣最長，以須跋為最小，此佛法階次之大要。若以聰哲博達為元首者，此乃是婆羅門法也。

As for the "venerable disciples", it means that among the five hundred arhats each had their specialty: some were foremost in wisdom, some in ṛddhi, some in eloquence, some in merit, some in keeping the precepts, some in contentment, or some in preaching the Dharma—each held the foremost position. If one wishes to discuss the elder brother coming before the younger brother, Ājñātakauṇḍinya was the eldest and Subhadra was the youngest; this is the broad outline of the hierarchical order in the Buddha's Dharma. If one were to take cleverness, intelligence, and broad erudition as the head, that would merely be the way of the brāhmaṇas.