tatrordhvambhāgaprakāśitamādityamātmā puruṣo na gṛhṇāti, kutaḥ---, adhiṣṭhānānṛjtthatvāt cakṣurindriyādhiṣṭhānasyārjavena tadānavasthitatvāt
The perceiving person does not grasp the sun illuminated by the upward portion [of rays]. Why? Because of the non-straightness of the substratum, [that is], because the substratum of the visual organ is not situated in a straight line with it.