Mahabharata 3.131.22

3.131.22

śyena uvāca |
uśīnara kapote te yadi sneho narādhipa |
ātmano māṃsamutkṛtya kapotatulayā dhṛtam || 22 ||

"The hawk said, 'O great ruler of men, if thou hast conceived an affection for this pigeon, then cut off a portion of thine own flesh, and weigh it in a balance, against this pigeon. And when thou hast found it equal (in weight) to the pigeon, then do thou give it unto me, and that will be to my satisfaction.' Then the king replied, This request of thine, O hawk, I consider as a favour unto me, and, therefore, I will give unto thee even my own flesh, after weighing it in a balance.'