nigirnah-swallowed; api-although; asura-indrena-by the best of the demons, Vrtrasura; na-not; mamara-died; udaram-the abdomen; gatah-reaching; maha-purusa-by the armor of the Supreme Lord, Narayana; sannaddhah-being protected; yoga-maya-balena-by the mystic power that Indra himself possessed; ca-also.