US-P13.009ab ।US-P13.009cd ॥
In plain words
'It is impermanent, it is impure' — that is what gets grasped here, for want of discrimination; and just so, 'I am happy, I am in pain' — through the seen thing that has become the limiting adjunct.
Close to the Sanskrit
'That one is impermanent, impure' — thus it is grasped here, from non-discrimination; and likewise 'I am happy, I am sorrowful' — by means of the seen, which has become the limiting adjunct.