He was greatly emaciated. He retained only the shape of a human being. Yudhishthira of great intelligence recognised him, however.
तं राजा क्षीणभूयिष्ठमाकृतीमात्रसूचितम्। अभिजज्ञे महाबुद्धिं महाबुद्धियुधिष्ठिरः॥