Valmiki Ramayana Aranya Kanda Sarga 68 Shloka 37

रणे in battle, सुदुष्करम् very difficult feat, यशस्करम् glorious, कर्म deed, कृतवान् done, निपातितः was made to fall, सः गृध्रराजः that lord of the vultures, तदा then, महर्षिकल्पेन following the prescription of sages, संस्कृतः sanctified, पुण्याम् holy, शुभाम् auspicious, आत्मनः his, गतिम् state, जगाम reached.

The king of vultures had performed a very difficult and glorious feat by laying down his life fighting. Sanctified by Rama's offering as laid down in scriptures by the seers, he attained a holy, auspicious and divine state of the self.