Just as the fire penetrating into the Sun or the Sun penetrating into the fire, cannot be perceived by any body so also that weapon entering into Bhima's body could not be perceived.
सूर्यमग्निः प्रविष्टः स्याद् यथा चाग्निं दिवाकरः। तथा प्रविष्टं तत् तेजो न प्राज्ञायत पाण्डवः॥