being the one who mercifully rested —

 one who mercifully rested revealing his lotus-eyed nature —

 she says ‘ŏh nambee! who is doing yŏga nidhrā lying down on thiru ananthāzhvār who spits poison’; —

 ŏh ẏou the ḵing who is reclining in thiru vehkā!, and —

(who is) gracefully lying down —

and involved in doing yŏga nidhrai (meditating sleep), —

while you are immersed in meditating sleep (yŏga nidhrā). —