首楞嚴義疏注經 8.254

8.254

此指二地已來至第十地，云諸菩薩，以是五位之中第四位故，或可總指從前至此五十五位。此第十地即是修習最後邊際，亦名此地名修習位。

This points to the bodhisattvas from the second ground up to the tenth ground, saying 'these bodhisattvas' because this is the fourth stage among the five stages; alternatively, it may comprehensively point to the fifty-five stages from the beginning up to this point. This tenth ground is the very ultimate boundary of cultivation, and this ground is also designated as the Stage of Cultivation.