Mahabharata 17.3.11

17.3.11

yudhiṣṭhira uvāca |
bhaktatyāgaṃ prāhuratyantapāpaṃ tulyaṃ loke brahmavadhyākṛtena |
tasmānnāhaṃ jātu kathaṃcanādya tyakṣyāmyenaṃ svasukhārthī mahendra || 11 ||

"Yudhishthira said, ‘It has been said that the abandonment of one that is devoted is infinitely sinful. It is equal to the sin that one incurs by slaying a Brahmana. Hence, O great Indra, I shall not abandon this dog today from desire of my happiness. Even this is my vow steadily pursued, that I never give up a person that is terrified, nor one that is devoted to me, nor one that seeks my protection, saying that he is destitute, nor one that is afflicted, nor one that has come to me, nor one that is weak in protecting oneself, nor one that is solicitous of life. I shall never give up such a one till my own life is at an end.’