sa vai bhagavataḥ śrīmat
pāda-sparśa-hatāśubhaḥ
bheje sarpa-vapur hitvā
rūpaḿ vidyādharārcitam
sah -- he; vai -- indeed; bhagavatah -- of the Supreme Personality of Godhead; sri-mat -- divine; pada -- of the foot; sparsa -- by the touch; hata -- destroyed; asubhah -- all inauspiciousness; bheje -- assumed; sarpa-vapuh -- his snake body; hitva -- giving up; rupam -- a form; vidyadhara -- by the Vidyadharas; arcitam -- worshiped.
The snake had all his sinful reactions destroyed by the touch of the Supreme Lord's divine foot, and thus he gave up his serpent body and appeared in the form of a worshipable Vidyadhara.
The words rupam vidyadhararcitam indicate that the erstwhile snake appeared in a beautiful form worshipable among the demigods called Vidyadharas. In other words, he appeared as the leader of the Vidyadharas.
