nanu cāsatyātmaprakāśātmakatve bāhyaprakāśakatvam apyasya kathaṃ vyavasthāpyata ity āha satītyādi /
[When] it is objected "if [cognition] does not have the nature of self-illumination, how can its illumination of external objects be established?" he responds beginning with "sati."