Ramayana
त्वया पुनर्ब्राह्मणगौरवादियं कृता प्रतिज्ञा ह्यनवेक्ष्य कारणम् । ततश्च कर्ता ह्यसि नात्र संशयो महाभयात्ऺत्रातुमृषींस्त्वमर्हसि ॥ 7-60-18 ॥
"But you, out of reverence for the brahmins, have made this vow without considering the cause; therefore you will surely accomplish it, of this there is no doubt. You are worthy to deliver the sages from this great peril."
english translation