金光明最勝王經疏 5.466

5.466

釋名者，梵云摩訶（此云大），室利（此云吉祥），提婆仳此云天女，總名大吉祥天女。此品明彼吉祥天女事，故以為名。

Regarding the explanation of the title: in Sanskrit, mahā means "great"; śrī means "auspiciousness" (śrī); devī means "goddess." Together, she is named the goddess Mahāśrī. Because this chapter clarifies the matters concerning that goddess Mahāśrī, it takes this as its title.