PURPORT

The Supreme Personality of Godhead, Mohini-murti, was able to bewilder all the demons, but Rahu was so clever that he was not bewildered. Rahu could understand that Mohini-murti was cheating the demons, and therefore he changed his dress, disguised himself as a demigod, and sat down in the assembly of the demigods. Here one may ask why the Supreme Personality of Godhead could not detect Rahu. The reason is that the Lord wanted to show the effects of drinking nectar. This will be revealed in the following verses. The moon and sun, however, were always alert in regard to Rahu. Thus when Rahu entered the assembly of the demigods, the moon and sun immediately detected him, and then the Supreme Personality of Godhead also became aware of him.