abhyāsāder niścayakāraṇasyābhāvāt kvacid ādye pratyakṣe bhrāntir utpadyata iti na tasya siddhyet svata eva pramāṇatā //
Due to the absence of means of certainty such as repeated [cognition], an illusion arises in some cases in the initial perception, [and] therefore its validity cannot be established from itself alone.