大般涅槃經義記 6.288

6.288

後之兩番雖復就法約人辨之，前番約就所化辯釋，後番約就能化辯釋，此兩番中為與阿闍辨其世字，三義別解。

Although the latter two rounds concern dharma, they are explained in terms of persons: the former round is distinguished and explained in terms of those who are transformed, and the latter round is distinguished and explained in terms of the one capable of transforming. In these two rounds, "for" (wei), "Ajāta" (ashena), and "śatru" (shi) are distinguished, providing separate interpretations for the three meanings.