PURPORT

Srila Madhvacarya remarks:

tesam satyac calanartham
harir dhanvantarir vibhuh
samartho 'py asuranam tu
sva-hastad amucat sudham

Dhanvantari, who was carrying the jug containing nectar, was a plenary incarnation of the Supreme Personality of Godhead, but although he was very strong, the asuras were able to take the jug of nectar from his hands.