俱舍論頌疏論本 28.22

28.22

前七各有三，謂味淨無漏者，於前七地各具有三：一、味等至，謂愛相應，愛能味著，故名為味。由定與彼愛相應故，定得味名。二、淨等至，謂世善定，與無貪等諸白淨法相應起故，定得淨名。三、無漏等至，謂出世定。

Regarding "The former seven each have three, namely, tainted, pure, and undefiled": in each of the former seven levels there are three: 1. Tainted attainment, which is associated with craving. Craving is able to relish, hence it is called "taste" [or "tainted"]. Because the concentration is associated with that craving, the concentration receives the name "tainted." 2. Pure attainment, which refers to mundane wholesome concentration. Because it arises associated with non-greed and other pure and white dharmas, the concentration receives the name "pure." 3. Undefiled attainment, which refers to supramundane concentration.