Mahabharata 5.178.26

5.178.26

guruṃ na hanyāṃ samare brāhmaṇaṃ ca viśeṣataḥ |
viśeṣatastapovṛddhamevaṃ kṣāntaṃ mayā tava || 26 ||

Having been abducted by thee, she obtaineth not a husband. Unto Rama that subjugator of hostile cities, I replied, saying.--This cannot be, O regenerate Rishi! All thy labour is vain, O son of Jamadagni, remembering thy old preceptorship, I am striving, O holy one, to gratify thee! As regards this maiden, she hath been refused by me before knowing what the faults, productive of great evils, of the female sex are, who is there that would admit into his abode a woman whose heart is another's and who (on that account) is even like a snake of virulent poison? O thou of high vows, I would not, even from fear of Vasava, forsake duty! Be gracious unto me, or do me without delay that which thou hast thought proper. This sloka also, O thou of pure soul, is heard in the Puranas, O lord, sung by the high-souled Marutta, O thou of great intelligence! The renunciation is sanctioned by the ordinance of a preceptor who is filled with vanity, who is destitute of the knowledge of right and wrong, and who is treading in a devious path.--Thou art my preceptor and it is for this that I have from love reverenced thee greatly. Thou, however, knowest not the duty of a preceptor, and it is for this that I will fight with thee. I would not slay any preceptor in battle, especially again a Brahmana, and more specially one endued with ascetic merit. It was for this that I forgive thee.