Mahabharata 3.266.63

3.266.63

kṣiprameṣyati te bhartā sarvaśākhāmṛgaiḥ saha |
pratyayaṃ kuru me devi vānaro'smi na rākṣasaḥ || 63 ||

Confide in me, O adorable lady, I am a monkey and not a Rakshasa!' Thus addressed by me, Sita seemed to meditate for a moment and then replied to me, saying, 'From the words of Avindhya I know that thou art Hanuman! O mighty-armed one, Avindhya is an old and respected Rakshasa! He told me that Sugriva is surrounded by counsellors like thee. Thou mayst depart now!' And with these words she gave me this jewel as a credential. And, indeed, it was by means of this jewel that the faultless Sita had been able to support her existence. And the daughter of Janaka further told me as a token from her, that by thee, O tiger among men, a blade of grass (inspired with Mantras and thus converted into a fatal weapon) had once been shot at a crow while ye were on the breast of the mighty hill known by the name of Chitrakuta! And this she said as evidence of my having met her and hers being really the princess of Videha. I then caused myself to be seized by Ravana's soldiers, and then set fire to the city of Lanka!'"