俱舍論記 19.158

19.158

「住下地心至非謂隨眠」者，通伏難。伏難意云：貪求上地即此下貪能緣上地者。為通此伏難故作是言：住下地心求上地等，是善法欲，非謂隨眠。

As for "A mind abiding in a lower stage ... does not mean an anuśaya": This resolves a tacit objection. The gist of the tacit objection is: If one craves and seeks an upper stage, this lower craving is able to take the upper stage as an object. In order to resolve this tacit objection, it is stated thus: When a mind abiding in a lower stage seeks an upper stage, this is wholesome desire for the Dharma (chanda), and does not mean an anuśaya.