buddha's advice to moggallana

there is a meditation technique that supposedly was given to v. moggalana by buddha wrote here like this: > “If you do not abandon your drowsiness by doing that, Moggallāna, then > you should pay attention to the perception of light – the night as the > day, the day as the night. In this way you should develop an open > mind, a mind of unveiled radiance. By doing this it is possible that > you will abandon your drowsiness. but then another script is saying it's delusion: > “There are some contemplatives & brahmans, brahman, who have the > perception of ‘day’ when it is night, and of ‘night’ when it is day. > This, I tell you, is their being in a dwelling of delusion. As for me, > I have the perception of ‘day’ when it is day, and of ‘night’ when it > is night. If anyone, when speaking rightly, were to say, ‘A being not > subject to delusion has appeared in the world for the benefit & > happiness of many, out of sympathy for the world, for the welfare, > benefit, & happiness of human & divine beings,’ he would rightly be > speaking of me. which one is correct? both? or perhaps it depends on context? what is the context? a related post: https://buddhism.stackexchange.com/questions/10528/how-to-attend-to-the-perception-of-light