dhiyo 'sitādirūpatve sā tasyānubhavaḥ katham / dhiyaḥ sitādirūpatve bāhyo 'rthaḥ kimpramāṇakaḥ //
If cognition is not of the nature of [things like] black, etc., how can it be an experience of that [object]? If cognition is of the nature of white, etc., what is the proof for [the existence of] external objects?