US-P18.106ab ।US-P18.106cd ॥
In plain words
If it were anything other than the Self, that sense of 'I am' pointing to an existent object would be completely false. Therefore, taking the direct primary meaning here leaves no obstacle to understanding.
Close to the Sanskrit
If it were something else, that apprehension of Being as “I” would indeed be false. Therefore, when the primary meaning is grasped, there is no obstacle here to understanding.