瑜伽論記 21.18

21.18

第二釋地名義。成就大義者，即是成就自利利他，名成大義。得未曾得出世間心者，初得無分別智生歡喜也。

Second is the explanation of the names and meanings of the stages. "Achieving the great purpose" refers to achieving self-benefit and benefiting others; this is called achieving the great purpose. "Attaining the supramundane mind never attained before" refers to the joy that arises upon first attaining non-conceptual wisdom.